Which option describes how a PDN connection context is identified at the PGW?

Which option describes how a PDN connection context is identified at the PGW?

A.
IMSI and EPS bearer ID

B.
IMSI, EPS bearer ID, and interface type

C.
IMSI, QoS, and EPS bearer ID

D.
MSISDN, QoS, and interface type

Explanation: