Refer to the exhibit. Why is RC unable to receive prefix 1.1.1.1/32?
A. On RB. neighbor 10.10.12.1 send-community is not configured.
B. On RA, ip bgp-community new-format is not configured.
C. On RB. neighbor 10.10.23.3 send-community is not configured.
D. On RA, neighbor 10.10.12.2 send-community is not configured.
E. On RC. ip bgp-community new-format is not configured.
F. On RB, ip bgp-community new-format is not configured
G. On RB. neighbor 10.10.23.3 next-hop-self is not configured.
