An Administrator Implements Interim Accounting for Guest Users So That

An administrator implements interim accounting for guest users so that ClearPass can track the amount of bandwidth that guests upload and download. Guests that abuse bandwidth consumption should be disconnected from the network. The administrator configures the following on the AOS-CX access switches: After performing this configuration, the administrator notices that guest users that have exceeded the guest bandwidth limit are not being disconnected. Upon further investigation, Access Tracker in ClearPass indicates a disconnect CoA message is being sent to the AOS-CX switch. What is causing this issue?

A) RADIUS change of authorization is not enabled on the AOS-CX switch.
B) Bandwidth consumption of the guests is not being reported by the AOS-CX switch.
C) NTP is not configured on the AOS-CX switch.
D) There is a time discrepancy between the AOS-CX switch and ClearPass.