Your network contains an Exchange Server 2010 server.

You need to prevent a user named User1 from using Exchange ActiveSync to download attachments that are larger than 50KB. The solution must not affect other users.

What should you do?

A.
Modify the properties of User1’s mailbox.

B.
Run the Manage Mobile Phone wizard for User1’s mailbox.

C.
Create a new Exchange ActiveSync mailbox policy and assign the policy to User1.

D.
Create a new Exchange ActiveSync virtual directory and configure User1 to connect to the new virtual directory.