Until recently, the country of United Marva could develop and produce medical devices and equipment more efficiently than other countries, and, in a sense, monopolized the industry. In the medical devices and equipment market, United Marva had a(n) advantage.

Which of the following best explains why large companies pay less for goods from wholesalers? a. large companies are able to pay for the goods they purchase in cash. b. large companies are able to increase the efficiency of wholesale production. c. large companies can buy all or most of a wholesaler's stock. d. large companies have better-paid employees who are better negotiators.