Your company has a single Active Directory directory service domain that includes a main office and two branch offices. Each branch office has its own Active Directory site. All user accounts are placed into organizational units （OUs） based on department. Multiple Group Policy objects （GPOs） are linked at the domain， the site， and the OU levels. A user in Atlanta transfers to a different branch office and joins a different department. You move her user account into the corresponding OU. After logging on to her new client computer， the user notices that the desktop settings are different from the settings she had in her previous location. You need to find out the effect of all GPOs on the user. What should you do？（）

A. Use the Security Configuration and Analysis snap-in.
B. Use the Resultant Set of Policy snap-in.
C. Run the Secedit /analyze command.
D. Run the Secedit /validate command.