How could you fix this issue?

A company has an Aruba ClearPass server at 10.47.47.8, FQDN radius.acnsxtest.local. This exhibit shows ClearPass Policy Manager’s (CPPM’s) settings for an Aruba Mobility Controller (MC).

The MC is already configured with RADIUS authentication settings for CPPM, and RADIUS requests between the MC and CPPM are working. A network admin enters and commits this command to enable dynamic authorization on the MC: aaa rfc-3576-server 10.47.47.8

But when CPPM sends CoA requests to the MC, they are not working.

This exhibit shows the RFC 3576 server statistics on the MC:

How could you fix this issue?
A . Change the UDP port in the MCs’ RFC 3576 server config to 3799.
B. Enable RadSec on the MCs’ RFC 3676 server config.
C. Configure the MC to obtain the time from a valid NTP server.
D. Make sure that CPPM is using an ArubaOS Wireless RADIUS CoA enforcement profile.

Answer: A