Cisco Exam Questions

what feature can be used to ensure that routers C through F are not used as transit routers

Refer to the exhibit. In a redundant hub-and-spoke deployment using EIGRP, what feature can be used to ensure that routers C through F are not used as transit routers for data traveling from router B to network 10.1.1.0?
Select the best response.

A.
Use address summarization at routers C, D, E, and F.

B.
Use the EIGRP Stub feature on routers C, D, E, and F.

C.
Use passive-interface on the spoke links in routers A and B.

D.
Change the administrative distance in routers A and B for routes learned from routers C, D, E, and F.