Which three Diameter AVPs are sent within the CCR-I message to the OCS?

Refer to the exhibit.

Which three Diameter AVPs are sent within the CCR-I message to the OCS? (Choose
three.)

A.
Request-Service-Unit

B.
Used-Service-Unit

C.
User-Equipment-Info

D.
Quota-Holding-Time

E.
3GPP-Reporting-Reason

F.
User-Name