Which configuration is necessary to enable R1 to see routes from R3?

Refer to the exhibit.

R2 is mutually redistributing between EIGRP and BGP.
Which configuration is necessary to enable R1 to see routes from R3?

A.
The R3 configuration must include ebgp-multihop to the neighbor statement for R2.

B.
The R2 BGP configuration must include bgp redistribute-internal.

C.
R1 must be configured with next-hop-self for the neighbor going to R2.

D.
The AS numbers configured on R1 and R2 must match.