Tying Contracts, Which Is Prohibited Under the Clayton Act, Refers

Tying contracts, which is prohibited under the Clayton Act, refers to the situation where a producer requires that a buyer

A) can resell the product but only at a higher price than the original purchase price.
B) cannot buy a similar product from other producers if that buyer wants to continue buying its product.
C) buy another of its products as a condition for buying the desired product.
D) cannot ever resell the product bought.