EPC is multiaccess by nature. Which protocol does it include?

A.
PDG..GGSN,UNTS, and LTE

B.
UMTS, PGW, SGSN, and Femtocell

C.
LTE, WiMAX, UMTS, and CDMA2000

D.
WiMAX, Femtocell, MME, and SGW