单项选择题

A.Configure the Remote Desktop Session Host (RD Session Host) server to use Per User licensing mode.Install 100 RDS CALs.
B.Configure the Remote Desktop Session Host (RD Session Host) server to use Per User licensing mode.Install 20 RDS CALs.
C.Configure the Remote Desktop Session Host (RD Session Host) server to use Per Device licensing mode.  Install 20 RDS CALs.
D.Configure the Remote Desktop Session Host (RD Session Host) server to use Per Device licensingmode. Install 100 RDS CALs.