Company.com has employed you as their Exchange administrator.The Company.com network contains an Exchange Server 2010 Organization.You are responsible for managing the Company.com network.You receive an instruction from management to reject e-mail messages that have a spam confidence level （SCL） of 5.You thus decide to configure the organization to accomplish this task. What should you do？（）

• A、You should consider configuring the sender reputation.
• B、You should consider configuring the sender filtering.
• C、You should consider configuring the content filtering.
• D、You should consider configuring the recipient filtering.