O $7 $12 $7 $15 2 $7 $19 3 $7 $25 4 $7 $32 5 $7 $39 6 $7 $47 7 $7 $59 (5 Marks) 5. Answer each of the following relating questions to a firm's costs: a. What is the relationship between long-run average costs and short-run average costs? Provide a diagram in your answer. b. True or false: there are no fixed costs in the long run. Explain your answer. c. True or false: marginal cost is always below average cost. Explain your