When you enter the switch(config)#aaa authentication dot1x default group radius command on a Cisco Catalyst switch, the Cisco IOS parser returns with the “invalid input detected” error message. What can be the cause of this error?

A.
You must use the dot1x system-auth-control command first to globally enable 802.1x.

B.
You must define the RADIUS server IP address first, using the switch(config)# radius-server host ip-address command.

C.
You must enter the aaa new-model command first.

D.
The method-list name is missing in the command.

E.
The local option is missing in the command.