You deploy mobile devices that run Microsoft Windows Mobile 5.0 with Microsoft Messaging and Security Feature Pack. A server that runs Microsoft Exchange Server 2003 Service Pack 2 is configured by using the default installation settings.   Company security policy requires a complex password for unlocking the Windows Mobilebased devices.   You need to ensure that the Windows Mobilebased devices that perform Microsoft ActiveSync synchronization meet the company security policy.   Which two actions should you perform？（）

• A、Enter all mobile device users in the Exceptions list.
• B、Enable the Require both numbers and letters option.
• C、Enable the Allow access to devices that do not fully support password settings option.
• D、Enable the Minimum password length （characters） option. Configure a value of 6 or greater.