What is the cause of the problem?

Refer to the exhibit.

The Frame Relay network in the diagram is not functioning properly.
What is the cause of the problem?

A.
The Gallant router has the wrong LMI type configured.

B.
The IP address on the serial interface of the Attalla router is configured incorrectly.

C.
The frame-relay map statement in the Attalla router for the PVC to Steele is not correct.

D.
The S3 interface of the Steele router has been configured with the frame-relay encapsulation ietf command

E.
Inverse ARP is providing the wrong PVC information to the Gallant router.

Explanation:
On serial 3 of Attalla we can see that there are 2 PVC’s defined, but only one of them is working and is shown as active. The frame relay map that was used to specify DLCI 509 was incorrect. Incorrect DLCI assignments that are configured in routers normally show up as “deleted” in the frame relay maps.