You are the domain administrator for your company. Roaming profiles are enabled for all users in the sales department. Roaming profiles are stored on a server named Server1, in a shared folder named Profiles. Roger is a user in the sales department. Susan is Roger's manager. Susan reports that Roger modifies his desktop settings, which results in the need for help desk assistance and in lost productivity for Roger. You want to ensure that Roger cannot modify his roaming profile. What should you do?（） 

• A、In Active Directory Users and Computers, on Roger's profile tab, change the profile path to //Server1/Profiles/%username%.dat. 
• B、In Active Directory Users and Computers, on Roger's profile tab, change the profile path to //Server1/Profiles/%username%.man. 
• C、In Roger's profile on Server1, change the file name of Ntuser.dat to Ntuser.man.
• D、In Roger's profile on his computer, change the file name of Ntuser.dat to Ntuser.man.