A.ItisthefirstmoduleinthepartnermodulechaininWebServicesSecurityManagement （WSSM）.
B.ItisthelastmoduleinthepartnermodulechaininWSSM.
C.Itisthefirstmoduleintheapplicationmodulechainforpartner.
D.Itisthelastmoduleintheapplicationmodulechainforthepartner.
参考答案：B
