Two routers named Atlanta and Brevard are connected by their serial interfaces as illustrated, but there is no connectivity between them. The Atlanta router is known to have a correct configuration. Given the partial configurations, identify the problem on the Brevard router that is causing the lack of connectivity.
A.
transmission unit size too large
B.
no loopback set
C.
an incorrect subnet mask
D.
incompatible encapsulation at each end
E.
an incorrect IP address
F.
incompatible bandwidth bewteen routers