ACME corporation is deploying a new voice gateway. The Network administrator is trying to configure the ISDN PRI T1 cards. However, the router does not accept the controller t10/0/0 command. The administrator sees this message
% Invalid input detected at " " marker.
To diagnose this problem, which two commands should the administrator use?

A.	Use the feature activate isdn command
B.	Use the clock source line command
C.	Use the show voice call status command
D.	Use the card type t1 command
E.	Use the show call active voice brief command
F.	Use the show inventory command