Exhibit:
R1#show ip bgp
BGP table version is 1, local router ID is 10.0.0.1 Status codes: s suppressed, d damped, h history, *valid,>best,iinternal Origin codes: i – IGP, e – EGP,? – incomplete
Network Next Hop Metric LocPrf Wight Path
*i133.3.0.0 3.3.3.3 0 100 0 65101 i
*i172.0.0.0/8 20.1.1.5 0 100 0 65102 i
R1#show ip route
Codes: C – connected, S – static, I – IGRP, 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, E – EGP i – IS-IS, L1 – IS-IS level-1, L2 – IS-IS level-2, * – candidate default
U – per-user static route, o – ODR, P – periodic downloaded staticroute
T – traffic engineered route
Gateway of last resort is not set
C 30.0.0.0/8 is directly connected, FastEthernet0/0
C 10.0.0.0/8 is directly connected, Loopback111
C 40.0.0.0/8 is directly connected, Serial0/0
Based on the exhibits show ip bgp and show ip route output, what is the most likely problem that causes the two IBGP routes NOT to be selected as the best route in the BGP table?

A.
The Weight is 0.

B.
The origin code is “i,”.

C.
The Metric (MED) is 0.

D.
BGP synchronization is disabled.

E.
The BGP next-hop is not reachable.

Explanation:
One of the first criteria in BGP to accept a route is that the next hop must be reachable.