What is the cause of the problem?

Refer to the exhibit.

The interface remains in a down state after entering the command that is shown in the exhibit. What is the cause of the problem?
A. The feature interface-vlan command must be configured.
B. The VDC contains only F1 interfaces.
C. There are IP address conflicts.
D. The VDC is “type OTV.”
E. The command copy run start was not entered.