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.
