You create a Microsoft Office SharePoint Server 2007 site. You also create a Business Data Catalog (BDC) definition. The BDC definition accesses a product database that is stored on a Microsoft SQL Server 2005 server. You need to ensure that users can filter the product data by the ProductType field from within the SharePoint server. What should you do?

A.
Create a custom action that passes the product type to the BDC definition.

B.
Create an IDEnumerator method that filters the data by the ProductType field.

C.
Create a Filter Descriptor object that passes the ProductType field value as a parameter.

D.
Create a type descriptor within the BDC definition for which ProductType is the type name.