Which path will be preferred by traffic destined to 10.1.3.1 and arriving at R1?

Observe the following exhibit. Which path will be preferred by traffic destined to 10.1.3.1 and
arriving at R1?

A.
Through R3, because R1 will only have a summary (type 3) LSA from R2

B.
Through R2, since it is the path through Area 0

C.
Through R3, since that is the lowest cost path (10+10 = 20, which is lower than 100)

D.
Through R2; this is the only path available for R1 to reach 10.1.3.0/24, since R3 is in a different
autonomous system than R1 and R2

Explanation:
Here is the configuration in a lab environment along with the results. All routers are 3725 routers
R1
interface FastEthernet0/0
ip address 10.1.1.1 255.255.255.0
ip ospf cost 100

duplex auto
speed auto
!
interface FastEthernet0/1
ip address 10.1.4.1 255.255.255.0
ip ospf cost 10
duplex auto
speed auto
!
router ospf 100
log-adjacency-changes
network 10.1.1.0 0.0.0.255 area 0
network 10.1.4.0 0.0.0.255 area 1
R2
interface Loopback0
ip address 10.1.3.2 255.255.255.0
!
interface FastEthernet0/0
ip address 10.1.1.2 255.255.255.0
ip ospf cost 100
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 10.1.2.2 255.255.255.0
ip ospf cost 10
duplex auto
speed auto
!
router ospf 100
log-adjacency-changes
network 10.1.1.0 0.0.0.255 area 0
network 10.1.2.0 0.0.0.255 area 0
network 10.1.3.0 0.0.0.255 area 0
R3
interface FastEthernet0/0
ip address 10.1.2.3 255.255.255.0
ip ospf cost 10
duplex auto

speed auto
!
interface FastEthernet0/1
ip address 10.1.4.3 255.255.255.0
ip ospf cost 10
duplex auto
speed auto
!
router ospf 200
log-adjacency-changes
network 0.0.0.0 255.255.255.255 area 1
R1 Additional information
R1#sh ip route
Codes: C – connected, S – static, R – RIP, M – mobile, B – BGP
D – EIGRP, EX – EIGRP external, O – OSPF, IA – OSPF inter area
N1 – OSPF NSSA external type 1, N2 – OSPF NSSA external type 2
E1 – OSPF external type 1, E2 – OSPF external type 2
i – IS-IS, su – IS-IS summary, L1 – IS-IS level-1, L2 – IS-IS level-2
ia – IS-IS inter area, * – candidate default, U – per-user static route
o – ODR, P – periodic downloaded static route
Gateway of last resort is not set
10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
O 10.1.2.0/24 [110/20] via 10.1.4.3, 00:07:44, FastEthernet0/1
O 10.1.3.2/32 [110/101] via 10.1.1.2, 00:04:48, FastEthernet0/0
C 10.1.1.0/24 is directly connected, FastEthernet0/0
C 10.1.4.0/24 is directly connected, FastEthernet0/1
R1#sh ip ospf nei
Neighbor ID Pri State Dead Time Address Interface
10.1.3.2 1 FULL/BDR 00:00:36 10.1.1.2 FastEthernet0/0
10.1.4.3 1 FULL/BDR 00:00:34 10.1.4.3 FastEthernet0/1
R1#ping 10.1.3.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.3.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 20/39/72 ms
R1#traceroute 10.1.3.2
Type escape sequence to abort.
Tracing the route to 10.1.3.2

1 10.1.1.2 44 msec * 40 msec