Which of the following statements about 4G-5G RAN-level interworking solution is FALSE?
A. It requires a direct interface between the two radio nodes serving the UE.
B. One serving radio node acts as master node and the other as secondary node.
C. Only one serving radio node can receive data plane traffic from the core network.
D. One of the radio nodes serving the UE is the anchor point for control plane.

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