Your customer recently acquired a smaller competitor. The acquired company is not currently
using Cisco routers, so you have connected the two WANs via an authenticated PPP link. After
configuring both routers, issuing the show interface sO/0 command on the Cisco router shows the
interface to be in the up/down state. Which two of these are possible causes? (Choose two.)

A.
MTUs do not match.

B.
Bandwidth statements do not match.

C.
IP addresses are not in the same subnet.

D.
CHAP passwords do not match.

E.
CDP versions do not match.