You use Forefront Identity Manager (FIM) 2010 in your company network. You create a new resource type in
the FIM Portal that supports a third-party web application. You need to mark the new resource type in the FIM
Portal as essential for the third-party application.
What should you do?

A.
Add a custom Usage Keyword in the Advanced View of the resource types.

B.
Use the Microsoft.ResourceManagement.WebServices Usage Keyword for the resource types.

C.
Create a custom attribute, and then bind the custom attribute to the resource types.

D.
Create an indexed string attribute that can be searched by the third-party application, and then bind the
indexed string attribute to the resource types.