6.12. RawDeal. RawDeal is the new sushi bar in the neighborhood. Their estimated marginal cost is 10 cents per sushi unit. RawDeal estimates that each consumer has a demand for sushi given by q = 20 - 10 p, where q is number of sushi units and p is price in dollars per unit. a. Determine the optimal price per sushi unit. b. RawDeal is considering switching to an all-you-can-eat-sushi policy. Determine the optimal price per customer. How does profit compare to pricing per unit? [All-you-caneat policy means the price per unit is zero] c. Ignoring implementation costs, what is the optimal two-part tariff for sushi (Le, a fee at the door plus a price per sushi piece)? 15 it better than the all-you-can-eat policy