Refer to the exhibit.If the devices produced the given

单项选择题

Refer to the exhibit.If the devices produced the given output,what is the cause of the EtherChannel problem?（）

A.There is a speed mismatch between SW1's Fa0/1 and SW2's Fa0/1 interfaces.
B.There is an MTU mismatch between SW1's Fa0/1 and SW2's Fa0/1 interfaces.
C.There is an encapsulation mismatch between SW1's Fa0/1 and SW2's Fa0/1 interface.
D.SW1's Fa0/1 interface is administratively shut down.

CCNA(200-120)