Based on the topology shown in the network diagram,what optional EIGRP configurations
will be required in order to achieve full connectivity within AS 100?

A.
Use the EIGRP no auto-summary command on R1 and R2.

B.
Use the EIGRP no auto-summary command on R3 and R4.

C.
Use the passive interface on the R1 and R2 interface that connects to the 10.1.1.0/24
and 10.1.2.0/24 subnet respectively.

D.
Use the passive interface command between the R3 and R1 connection and between
the R3 and R2 connection.

E.
Use the variance command on R3.