You work as a Web Developer at Certkiller.com. You are in the process of creating a Webapplication using Microsoft ASP.NET 3.5.  A third-party assembly contains custom server controls. This assembly does not contain a strongname and it’s not part of the application’s Microsoft Visual Studio 2008 solution. You have to makesure that the other users are able to use the custom controls. You decide to configure theapplications project.  What should you do？（）

• A、You should add a project reference to the project.
• B、You should add a Web reference to the project.
• C、You should add a service reference to the project.
• D、You should add an assembly reference to the project.