Having the above BGP peerings, select the two configurations for rtrB that will fulfill the following
criteria:
-Will advertise all routes from rtrA to rtrD but not to rtrC
-Will advertise the routes from rtrD to rtrC

A.
router bgp 2
neighbor 1.1.1.1 remote-as 1
neighbor 1.1.1.1 route-map rtrA in
!
route-map rtrA permit 10
set community no-advertise
!

B.
router bgp 2
neighbor 1.1.1.1 remote-as 1
neighbor 1.1.1.1 route-map rtrA in
!
route-map rtrA permit 10
set community no-export
!

C.
router bgp 2
neighbor 1.1.1.1 remote-as 1
neighbor 1.1.1.1 route-map rtrA in
neighbor 3.3.3.3 remote-as 3
neighbor 3.3.3.3 route-map rtrC out
!
route-map rtrA permit 10
set community 5
!
route-map rtrC permit 10
match community 5
!

D.
router bgp 2
neighbor 1.1.1.1 remote-as 1
neighbor 1.1.1.1 route-map rtrA in
neighbor 3.3.3.3 remote-as 3
neighbor 3.3.3.3 route-map rtrC out
!
route-map rtrA permit 10
set community 5
!
route-map rtrC permit 10
match community 5
!
route-map rtrC permit 20
!