Network topology exhibit.

Why would Certkiller 2 accept or reject the BGP update from Certkiller 13 about the 172.0.0.0/8 prefix?

A.
Certkiller 2 will reject BGP update to avoid a potential routing loop.

B.
Certkiller 2 will accept the BGP update it is selected as the best path by the BGP route selection process.

C.
Certkiller 2 will reject the BGP update because it already has an OSPF (IGP) route to reach the 172.0.0.0/8 prefix

D.
Certkiller 2 will accept the BGP update and it will be used as a backup path to reach the 172.0.0.0/8 prefix if the OSPF (IGP) route is not available.