You need to allow connections to the existing Project Web Access (PWA) site through an alternate port

You have a Microsoft Office Project Server 2007 environment. You need to allow connections to the existing Project Web Access (PWA) site through an alternate port. What should you do?

A.
Configure the existing Shared Services Provider to create a new PWA site.

B.
Create a new Shared Services Provider.

C.
Create a new Web application.

D.
Extend the existing Web application.