In which ways does the TACACS protocol differ from RADIUS?

A.	TACACS uses TCP to communicate with the NAS.
B.	TACACS can encrypt the entire packet that is sent to the NAS.
C.	TACACS supports per-command authorization.
D.	TACACS authenticates and authorizes simultaneously, causing fewer packets to be transmitted.
E.	TACACS uses UDP to communicate with the NAS.
F.	TACACS encrypts only the password field in an authentication packet.