Refer to the exhibit.
interface port-channel110 description VPC110 FEX110 switchport switchport mode fex-fabric fex associate 110 vpc 110 ! interface Ethernet1/20 description Po110 VPC110 FEX110 switchport switchport mode fex-fabric fex associate 110 channel-group 110 no shutdown ! fex 110 pinning max-links 1
Which statement about the configuration is true?

A.	The FEX has two uplinks to a single core switch.
B.	Link down messages from the FEX are delayed.
C.	The FEX is attached to two parent switches.
D.	At least two uplinks to the FEX must be active for the FEX to come online.