Which are the two characteristics of 4G/LTE networks? (Choose two)

Which are the two characteristics of 4G/LTE networks? (Choose two)
A . eNodeB uplinks to the packet core use the lub interface
B . 4G/LTE networks use centralized MTSO-based handoff between cell towers
C . The E-UTRAN model forms the basis of 4G/L TE RAN technologies
D . eNodeBs in the cell towers requires less buit-in intelligence
E . RNCs in 4G/LTE networks have built-in MPLS support
F . Using the X2 interface, eNodeBs have direct communication between each other

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Answer: D, F