5. A firm has fixed costs of $60 and variable costs as indicated in the table at the bottom of this page. Complete the table Total Total Total Total Average Average Average Marginal Product Fixed Cost Variable Cost Cost Fixed Cost Variable Cost Total Cost Cost $ $ 0 $ $ $ 45 WN - 85 120 150 185 225 10 00 - ) UT A 270 325 1III1 390 10 465 a. Graph total fixed cost, total variable cost, and total cost. Explain how the law of diminishing returns influences the shapes of the variable-cost and total-cost curves. b. Graph AFC, AVC, ATC, and MC. Explain the derivation and shape of each of these four curves and their relationships to one another. Specifically, explain in nontechnical terms why the MC curve intersects both the AVC and the ATC curves at their minimum points