A customer calls you to report that it receives an error when entering the pinning max-links
4 command in FEX configuration mode on its Cisco Nexus 5596T Switch. Which of these is
a likely cause for this condition?

A.
The fabric interface switchport mode is set to Access.

B.
A fabric interface is in a port channel.

C.
The transceiver is incorrect.

D.
The FEX fabric interface is down.

E.
Only two fabric interfaces are connected.