Mercedes-Benz of North America (MBNA), the exclusive U.S. distributor of Mercedes-Benz (Mercedes) automobiles, was a wholly owned subsidiary of Daimler-Benz Aktiengesellschaft (DBAG), the manufacturer of Mercedes automobiles. MBNA required its approximately 400 franchised Mercedes dealers to agree not to sell or use (in the repair or servicing of Mercedes automobiles) any parts other than genuine Mercedes parts. Mozart, a wholesale automotive parts distributor, filed an antitrust suit against MBNA. Mozart alleged, among other things, that MBNA had violated § 1 of the Sherman Act and § 3 of the Clayton Act by tying the sale of Mercedes parts to the sale of Mercedes automobiles. The trial court ruled in favor of MBNA. Was the trial court's ruling correct?