单项选择题
Afterthesiteinstallationiscomplete，youshouldverifythemobilityoftheVoWLANdevicewhilewalkingthesiteonanactivephonecall.WhichCiscoWLCorCiscoWCScommandismostbeneficialindeterminingroamingefficiency？（）
A.show{802.11a
B.11b}
C.showclientroam-history
D.showclienttsm802.11a/b/g
E.showclientdetail
F.showclientap-roam-history