The AP is unable to join the controller. What is the cause of this error?

The AP is unable to join the controller. What is the cause of this error?

Refer to the exhibit.

A . The controller code version is lower than the code of the AP attempting to join.
B . AP code is not the same as the controller and must download firmware.
C . AP model % not compatible with the controller code version.
D . The AP is riot conjured in the controller auth-list of acceptable APs.

Answer: C