Your company has an Active Directory domain.   A user attempts to log on to the domain from a client computer and receives the following message： "This  user account has expired. Ask your administrator to reactivate the account."  You need to ensure that the user is able to log on to the domain.  What should you do（）

• A、Modify the properties of the user account to set the account to never expire.
• B、Modify the properties of the user account to extend the Logon Hours setting.
• C、Modify the properties of the user account to set the password to never expire.
• D、Modify the default domain policy to decrease the account lockout duration.