27、ATTACHREQUEST,ATTACHACCEPT分别包含于哪条空口RRC消息内（）
A.RRC CONNECTION SETUP COMPELTE,RRC CONNECTION RECONFIGURATION
B.RRC CONNECTION RECONFIGURATION, RRC CONNECTION SETUP RECONFIGURATION COMPELTE
C.RRC CONNECTION REQUEST, RRC CONNECTION SETUP
D.RRC CONNECTION SETUP, RRC CONNECTION SETUP COMPELTE
正确答案是A