TS 38.211 ON NR是下面哪个协议() ()

TS 38.211 ON NR是下面哪个协议() ()

A. Physical channels and modulation

B. NR and NG-RAN Overall Description

C. Radio Resource Control (RRC) Protocol

D. Base Station (BS) radio transmission and reception

请帮忙给出正确答案和分析，谢谢！