TTACH 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.RRC CONNECTION RECONFIGURATION, RRC CONNECTION SETUP RECONFIGURATION COMPELTE
正确答案是C