Inter-NodeB的切换和Intra-NodeB的切换从信令流程的区别是（）

A .Inter-NodeB的切换是Radio Link Addition Request

B .Intra-NodeB的切换是Radio Link Addition Request

C .Inter-NodeB的切换是Radio Link SetupRequest

D .Intra-NodeB的切换是Radio Link Setup Request

E .Inter-NodeB的切换是Radio Link Reconfiguration Request