单项选择题

A.YouhaveaservernamedServer1thatrunsWindowsServer2008R2.Server1isanenterpriserootcertificationauthority(CA).YouhaveaclientcomputernamedComputer1thatrunsWindows7.YouenableautomaticcertificateenrollmentforallclientcomputersthatrunWindows7.YouneedtoverifythattheWindows7clientcomputerscanautomaticallyenrollforcertificates.WhichcommandshouldyourunonComputer1()
A.certreq.exe-retrieve
B.certreq.exe-submit
C.certutil.exe-getkey
D.certutil.exe-pulse