a. Complete the following table and answer two questions about costs. Instructions: Enter your responses rounded to the nearest whole dollar. If you are entering any negative numbers be sure to include a negative sign (-) in front of those numbers. Rate of Output Total Cost Marginal Cost Average Cost 0 $ 60 1 $ 65 2 $ 75 3 $ 105 4 $ 140 5 $ 180 b. What output has the lowest per-unit cost equal to marginal cost? units c. What is the value of fixed costs