what is the problem on the Brevard router that is causing the lack of connectivity?

Two routers named Atlanta and Brevard are connected by their serial interfaces as shown in the exhibit, but there is no data connectivity between them. The Atlanta router is known to have a correct configuration. Given the partial configurations shown in the exhibit, what is the problem on the Brevard router that is causing the lack of connectivity?

A.
incompatible IP addresses

B.
insufficient bandwidth

C.
incorrect subnet mask

D.
incompatible encapsulation

E.
Link reliability too low

F.
IPCP closed

Explanation:
Answer A is correct because Interface Serial 0 of Atlanta Router has 192.168.10.1 And Interface Serial 1 of Router Brevard has 192.168.11.2. These are from different network.