Refer to the exhibit. Switch port FastEthernet 0/24 on AlSwitch1 will be used to create an IEEE 802.1Q- complaint 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