Acompanyslegalandregulatorydepartmentshavedraftedanewpolicyinwhichemailsmustbe retainedfornolongerthanthreeyears.Whichofthefollowinglocationsshouldanadministrator configurewhencomplyingwiththenewpolicy？（）
A.Localworkstations
B.Backuptapes
C.Domaincontrollers
D.Emailserver
E.SMTPgateway
F.Proxyserver
参考答案：ABD
