What is the reason for the failure?

Refer to the exhibit. All incoming calls to the Cisco Unified Communications Manager Express B-ACD are disconnected immediately. What is the reason for the failure? A.The wrong Tcl is associated with POTS dial-peer 30. The correct Tcl script should be "app-b- acd". B.The drop-through option is in conflict with the welcome prompt. C.The param aa-pilot [...]