Which of the Following Is Not a Necessary Element of Third-Line

Which of the following is not a necessary element of third-line forcing in breach of CCA Part IV?

A) There is one product the buyer desires and another product that is forced upon them.
B) At least four parties are involved.
C) The buyer cannot purchase the desired product without also purchasing the third party's product.
D) The conduct has the effect of substantially lessening competition in the market.