Ayau Distributors, Which Has Stores in Ohio and Michigan, Sells

Ayau Distributors, which has stores in Ohio and Michigan, sells bedroom furniture for very low prices, but requires that buyers to also purchase a washing machine at a rather high price. This requirement probably is:

A) a tie-in sale that is illegal per se like all tie-in sales
B) a tie-in sale that is illegal under a rule of reason analysis because of the negative effect on competition
C) a tie-in sale that is legal under a rule of reason analysis because there is little market effect on the products
D) a tie-in sale that is legal per se like all tie-in sales since the duPont case
E) an illegal exclusive dealing contract