单项选择题

A. Add a restricted group named adatum\Backup Operators. Add Backup Operators to the This group is a member of list.
B. Add a restricted group named adatum\Backup Operators. Add Backup Operators to the Members of this group list.
C. Add a restricted group named Backup Operators. Add adatum\Backup Operators to the This group is a member of list.
D. Add a restricted group named Backup Operators. Add adatum\Backup Operators to the Members of this group list.