You need to prepare the certificate required for the planned deployment

You plan to deploy 20 Client Access servers that will have Exchange Server 2013 installed.
You need to prepare the certificate required for the planned deployment. The solution must
ensure that the same certificate can be used on all of the Client Access servers. What
should you do first?

A.
On one of the Client Access servers, run the New-ExchangeCertificate cmdlet and specify
the privatekeyexportable parameter.

B.
On all of the Client Access servers, run the Get-ExchangeCertificate cmdiet.

C.
On one of the Client Access servers, run the New-ExchangeCertificate cmdiet and specify
the binaryencoded parameter.

D.
On one of the Client Access servers, start the Certificates console and run the Certificate
Import Wizard.