Your network consists of a single Active Directory domain. The functional level of the domain is Windows Server 2008 R2. All servers run Windows Server 2008 R2. A corporate security policy requires complex passwords for user accounts that have administrator privileges. You need to design a strategy that meets the following requirements： èEnsures that administrators use complex passwords èMinimizes the number of servers required to support the solution What should you include in your design？（）

A. Implement Network Access Protection （NAP）.
B. Implement Active Directory Rights Management Services （AD RMS）.
Create a new Password Settings Object （PSO） for administrator accounts.
D. Create a new child domain in the forest. Move all non-administrator accounts to the new domain.Configure a complex password policy in the root domain.