Refer to the exhibit. 
Why is network 172.16.1.0/24 not installed in the routing table?
A.
There is no ARP entry for 192.168.1.1.
B.
The router cannot ping 192.168.1.1.
C.
The neighbor 192.168.1.1 just timed out and BGP will flush this prefix the next time that the
BGP scanner runs.
D.
There is no route for 192.168.1.1 in the routing table.