A subscriber is moving from LTE to GERAN/UTRAN and the SGSN is Release 7 3GPP.
Which two statements about this situation are true? (Choose two.)

A.
The SGW has a GTPv2 tunnel towards SGSN

B.
The PGW has a GTPv2 tunnel towards SGSN

C.
The PGW has a GTPv1 tunnel on the S8 interface toward the SGW.

D.
The PGW has a GTPv2 tunnel on the S8 interface toward the SGW.