A business partner is both a customer and a supplier. The customer has a sizable open amount unpaid. You want to make sure that the payment program posts no outgoing payments to the business partner until he has paid part of the outstanding amount. How can you do this?

 A. Assign an overall payment block in the general business partner role details.

 B. Assign a central purchasing block in the general business partner role details.

 C. Assign a payment block in the customer business partner role details.

 D. Assign a payment block in the supplier business partner role details.