Your company has an Active Directory directory service domain. All servers run Windows Server 2003. You are developing a security monitoring plan. You must monitor the files that are stored in a specific directory on a member server. You have the following requirements. Log all attempts to access the files.Retain log information until the full weekly backup occurs. You need to ensure that the security monitoring plan meets the requirements.  What should your plan include？（）

• A、 Configure a directory service access audit policy. Increase the maximum size of the security log.
• B、 Configure a directory service access audit policy. Set the system log to overwrite events older than 7 days.
• C、 Configure an object access audit policy for the directory. Increase the maximum size of the system log.
• D、 Configure an object access audit policy for the directory. Set the security log to overwrite events older than 7 days.