Which two functionalities does an update PDP context request sent from the GGSN to the
SGSN provide? (Choose two.)

A.
Provide a PDP address to the MS.

B.
Check that the PDP context is active.

C.
Delete a PDP context from the SGSN.

D.
Establish a network-requested secondary PDP context activation procedure.

E.
Establish a network-requested primary PDP context activation procedure.