You try to configure the command switchport mode trunk on an interface. However, you see the error message:
“Command rejected: An interface whose trunk encapsulation is Auto cannot be configured to trunk mode.”
What command will fix the issue?

A. Switch(config-if)# switchport mode trunk manual
B. Switch(config-if)# no switchport mode dynamic auto
C. Switch(config-if)# switchport trunk encapsulation dot1q
D. Switch(config-if)# no switchport trunk encapsulation auto

C. The command will not complete because the interface is set to dynamic auto, which implies the trunk protocol will be negotiated. You cannot set it to switchport mode trunk until you statically set the encapsulation via the command switchport trunk encapsulation dot1q.