Which two sets of configurations bring the neighbors up?

Refer to the exhibit.

The R1 and R2 configurations are

R1

router bgp 100

neighbor 10.1.1.2 remote-as 200

R2

router bgp 200

neighbor 10.1.1.1 remote-as 100

The neighbor relationship is not coming up

Which two sets of configurations bring the neighbors up? (Choose two.)
A . R2
ip route 10.1.1.1 255 255.255 255 192.168.1.1
!
router bgp 200
neighbor 10.1.1.1 ttl-security hops 1
neighbor 10.1.1.1 update-source loopback 0
B . R1
ip route 10.1.1.1 255 255.255 255 192.168.1.2
!
router bgp 100
neighbor 10.1.1.2 disable-connected-check
neighbor 10.1.1.2 update-source Loopback 0
C . R1
ip route 10.1.1.2 255 255.255 255 192.168.1.2
!
router bgp 100
neighbor 10.1.1.1 ttl-security hops 1
neighbor 10.1.1.2 update-source loopback 0
D . R2
ip route 10.1.1.2 255 255.255 255 192.168.1.1
!
router bgp 200
neighbor 10.1.1.1 disable-connected-check
neighbor 10.1.1.1 update-source Loopback 0
E . R2
ip route 10.1.1.2 255 255.255 255 192.168.1.2
!
router bgp 100
neighbor 10.1.1.2 ttl-security hops 1
neighbor 10.1.1.2 update-source loopback 0

View Answer

Answer: BD