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