People tend to eat more at all you can eat buffets than they ...

[Bob-Dole]

People tend to eat more at all you can eat buffets than they would at any other restaurants. This is so because the cost of consuming an additional item at an all you can eat buffet is
 a. negative
 b. zero
 c. positive
 d. None of the above

Question 2

Firm X owns both a grocery store and the parking lot outside the grocery store. In order to increase the traffic at the store the owners of the store should
 a. Increase the prices on the goods sold in the store
 b. Increase the parking rates
 c. All of the above
 d. None of the above

[onowka]

Answer to Question 1

b

Answer to Question 2

d