You need to create a custom content type and specify the content type ID.

What should you do?

A.
Create a new module.

B.
Create a custom Feature.

C.
Call the Lists Web service.

D.
Call the Webs Web service.

Explanation:
MNEMONIC RULE: “custom Feature for custom content type”

Create Custom Content Types in SharePoint 2010
http://msdn.microsoft.com/en-us/library/ff630942.aspx