Your network contains an Active Directory domain. You have a print server named Server1 that runs Windows Server 2008 R2. You deploy a new print device and create a shared printer. You need to ensure that only members of a group named Marketing can print color documents on the new print device. All other users must only be able to print black and white documents on the new print device. What should you do？（）

A. Create a printer port.
B. Create a second shared printer.
C. Modify the Active Directory printer object.
D. Modify the properties of the shared printer.