You have an Exchange Server 2010 organization.
You deploy several Exchange Server 2013 servers to the organization and you deploy the required
certificates.
You attempt to connect to an Exchange Server 2013 server by using Outlook Web App and you
discover the error message shown in the exhibit (Click the Exhibit button.)
Exhibit: * Missing*
You need to prevent the error message from appearing when users access Outlook Web App on the
new servers.
What should you do?

A.
Remove the Exchange Server 2010 servers from the organization.

B.
Run the Remove-ExchangeCertificate cmdlet.

C.
From the Exchange Management Console, remove the certificates from the Exchange Server 2010
servers.

D.
From the Exchange Admin Center, modify the properties of the OWA virtual directory.