Which of the Following Statements About Close Buyer-Seller Relationships in Business

Which of the following statements about close buyer-seller relationships in business markets is FALSE?

A) In close relationships,buyers and suppliers can share tasks at a lower total cost of doing business.
B) The buyer can gain a more dependable source of supply.
C) Buyers and suppliers can engage in joint problem solving.
D) Long-term commitments on larger order quantities often cause the supplier to raise its selling price.