You are the network administrator for TestKing Oil. The network consists of three Active Directory domains in a single forest. All domain controllers run Windows Server 2003. TestKing Oil enters into a business partnership with Oil Importers. The Oil Importers network consists of four Active Directory domains in a single forest. To enable the two companies to share resources, a two-way forest trust relationship with selective authentication is created. Now you need to ensure that the research data of TestKing Oil will remain inaccessible to all users in Oil Importers. First, you create a local group named No Oil. Then, you assign the Deny - Full Control permission to No Oil. What should you do next?（）

Add the Domain Guests group from each of the four domains of Oil Importers to No Oil.
B. Add the Other Organization group to No Oil.
C. Add the Users group from each of the four domains of Oil Importers to No Oil.
D. Add the Proxy group to No Oil.