173.郑西线北电BTS9000出现“Access”或“LNAfault”告警是()模块故障引发的。[321040302]

173.郑西线北电BTS9000出现“Access”或“LNAfault”告警是()模块故障引发的。[321040302]

A.DDM

B.SICS

C.RICAM

D.RM

正确答案是A