What is the reason the trunk does not form, even thought the proper cabling has been attached?

Refer to the exhibit.

Switch port FastEthernet 0/24 on AlSwitch1 will be used to create an IEEE 802.1Qcomplaint trunk to another switch. Based on the output shown.

What is the reason the trunk does not form, even thought the proper cabling has been attached?
A . VLANs have not been created yet.
B . An IP address must be configured for the port.
C . The port is currently configured for access mode.
D . The correct encapsulation type has not been configured.
E . The no shutdown command has not been entered for the port.

Answer: C