YourcompanyhasasingleActiveDirectorydirectoryserviceforestwiththreedomains.YouplantomodifytheActiveDirectoryschema.Youneedtoidentifytheschemamasterfortheforest.Whatshouldyoudo?()

A.Runtheregsvr32schmmgmt.dllcommand.UsetheActiveDirectoryDomainsandTrustssnap-in.

B.Runtheregsvr32schmmgmt.dllcommand.UsetheActiveDirectoryUsersandComputerssnap-in.

C.UsetheDsgetcommand-linetool.

D.UsetheDsquerycommand-linetool.