(1) (2) (3) (41 (5) Variable Price per Total Fixed Marginal Input Variable Input Cost Output Cost $20 $100 20 2 $20 $100 3 $20 $100 90 $20 $100 120 C 5 $20 $100 140 D Refer to the above table. Diminishing marginal returns set in with the addition of which unit of the variable input? O the third O the fifth O the second O the fourth As more labor is added to a fixed amount of capital, eventually the marginal product of labor decreases. O True O False Joan adds one more employee to her construction company. The additional quantity of output produced by this employee represents the average product of this employee. True O False Suppose a local floral shop has explicit costs of $200,000 per year and implicit costs of $50,000 per year. If the store earned an economic profit of $50,000 last year, this means that the store's accounting profit equaled: O $100,000. Q $200,000. O $50,000. Q $10,000