You work as the enterprise exchange administrator at TestKing.com. TestKing.com makes use of Microsoft Exchange Server messaging solution. The TestKing.com network consists of a single ActiveDirectory domain named testking.com. TestKing.com is configured to run in an Exchange Server 2010 environment. You have received instructions from the CIO to minimize the amount of e-mail messages for company executives， which areusally sent to the distribution groups. What should you do？（）

• A、The best option is to include sharing policies in the plan.
• B、The best option is to include Outlook Protection Rules in the plan.
• C、The best option is to include custom MailTips in the plan.
• D、The best option is to include dynamic distribution groups in the plan.