【单选题】
You have an Exchange Server 2010 organization. <br /> You need to plan a message hygiene solution that meets the following requirements：.Spoofing must be minimized<br /> .Open SMTP relays must be added to IP block lists automatically <br /> What should you include in the plan？（）
A、Sender ID filtering and recipient filtering
B、Sender ID filtering and sender reputation
C、sender filtering and recipient filtering
D、sender reputation and recipient filtering
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