You are the network administrator for . The network consists of a single Active Directory forest containing two domains, and The functional level of both domains is Windows 2000 mixed contains two domain controllers running Windows 2003 and three domain controllers running Windows 2000 server. A member server named TestKing9 hosts applications and files that all company users need to access. You need to enable all users in to access the applications and files on TestKing9. Which three actions should you perform? （）(Each correct answer is a part of a complete solution. Select three.)

A. Create a domain local group named DeutschUsers in ch.testking.com.
B. Create a domain local group named DeutschUsers in de.testking.com.
C. Add the Users group from ch.testking.com to DeutschUsers.
D. Add the Users group from de.testking.com to DeutschUsers.
E. On TestKing9, grant the appropriate permissions to the Users group from ch.testking.com.
F. On TestKing9, grant the appropriate permissions to DeutschUsers.