单项选择题

A.AlldomaincontrollersrunWindowsServer2008R2andareconfiguredasDNSservers.YouhaveanActiveDirectory-integratedzone.YouhavetwoActiveDirectorysites.Eachsitecontainsfivedomaincontrollers.YouaddanewNSrecordtothezone.YouneedtoensurethatalldomaincontrollersimmediatelyreceivethenewNSrecord.Whatshouldyoudo()
A.FromtheDNSManagerconsole,reloadthezone.
B.FromtheServicessnap-in,restarttheDNSServerservice.
C.Fromthecommandprompt,runrepadmin/syncall.
D.FromtheDNSManagerconsole,increasetheversionnumberoftheSOArecord.