Which is a valid combination of configuration statements to set up a simple MPLS VPN on a PE?

Which is a valid combination of configuration statements to set up a simple MPLS VPN on a PE?

A.
ip vrf yellow
rd 122:23
route-target both 122:23
ip vrf forwarding interface serial 0/0
interface s0/0
ip address 10.3.0.1 255.255.255.252

B.
ip vrf yellow
route-target both 122:23
interface s0/0
ip vrf forwarding yellow
ip address 10.3.0.1 255.255.255.252

C.
ip vrf yellow
route-target both 122:23
interface s0/0
rd 122:23
ip vrf forwarding yellow
ip address 10.3.0.1 255.255.255.252

D.
ip vrf yellow
rd 122:23
interface s0/0
route-target both 122:23
ip vrf forwarding yellow
ip address 10.3.0.1 255.255.255.252

Explanation:
Note: the correct option B lacks route distinguisher configuration (rd 122:23).