With Tying Arrangements, the Courts May Establish a Seller's Economic

With tying arrangements, the courts may establish a seller's economic power by showing that:

A) the seller occupied a dominant position in the tying market.
B) the seller's product enjoys an advantage not shared by its competitors in the tying market.
C) a substantial number of customers have accepted the tying arrangement and the only explanation for their willingness to comply is the seller's economic power in the tying market.
D) Any of the above.
E) (a) and (c) , but not (b)