Ray's Barbecue produces about 200 slabs of barbecued ribs per day. The price that Ray pays for each slab of ribs rises by 10 and the rent on Ray's restaurant location rises by 5 percent increase. Marginal cost will increase as a result of a. the increase in the rent paid by Ray and the increase in the price of slabs of ribs. b. only the increase in the rent paid by Ray. c. only the increase in the price that Ray pays for slabs of ribs. d. neither of the increases in the prices