You are creating an assignment business rule. You select a rule set. You are able to create a new business rule. However, the assignment rule type does not appear in the drop-down list. You need to ensure that you can create an assignment rule. What should you do first?

A.
Deploy the model.

B.
Check out the model.

C.
Select the Automatic rule set.

D.
Assign yourself to the Modeler security role.