You are migrating from a Microsoft Office Project Server 2003 environment to a Project Server 2007 environment. Some users are configured to use Project Server authentication in the Project Server 2003 environment. You need to ensure that these users are able to log in to the Project Server 2007 environment. What should you do?

A.
Configure forms-based authentication in the Project Server 2007 environment.

B.
Configure LDAP authentication in the Project Server 2007 environment.

C.
Configure Active Directory synchronization in the Project Server 2007 environment.

D.
Create a specific user group for the affected users. Grant the group the Log On permission for Project Web Access.