8. Use the incremental analysis to find the Economics efficiency in the following production table. Amount of Net Revenue Marginal Amount of Total cost of Marginal Cost output Revenue Labor labor 0 0 10 SO 2,500 2,500 1 1,200 1,200 184 14,300 1,800 12,400 1,200 110 5,300 1,000 3 3,600 4,800 1,200 1,200 120 5,900 600 A. employing 1st Labor B. employing 2nd labor C. employing 3rd labor D. employing 4th labor E. employing 5th labor 9. Which of the following statements is NOT correct? A) A sunk cost has been incurred in the past and will not change regardless of what decisions are made. B) Sunk costs are NOT equivalent to fixed costs c) Explicit costs are directly traceable to final product. For example, a feed store purchases corn, soybean meal, vitamins, and antibiotics to produce a special animal feed. D) The cost of using buildings, equipment and labor are classified as explicit costs E) Total cost is the sum of total variable cost and total fixed cost