The Hub and Spoke routers are directly connected through their serial interfaces for purposes of
testing. Based on the output shown in the exhibit, what must be done to make the serial line operational?

A.
Start the clock on the Hub router.

B.
Change the IP address on the Spoke router.

C.
Configure the serial 0/0 interface on the Spoke router with a clockrate.

D.
Replace the broken cable between the two devices.

E.
Use the no shutdown command on the Hub router.

Explanation: