Which two actions should you perform? (Each correct answer presents a complete solution

You have an Exchange Server 2010 server.

You need to prevent users from accessing public folders using Outlook Web Access (OWA). Your solution must not prevent users from accessing public folders using Microsoft Office Outlook.

Which two actions should you perform? (Each correct answer presents a complete solution. Choose two).

A.
Create an OWA mailbox policy.

B.
Create a managed folder mailbox policy.

C.
Modify the properties of the OWA virtual directory.

D.
Modify the properties of the public folder database.