||Indicate whether each of the following statements is true or false and explain why. A. Constant returns to scale and constant input prices are the only requirements for a total cost function to be linear. B. Changing input prices will always alter the slope of a given isocost line. C. In profit-maximization linear programming problems, negative values for slack variables imply that the amount of an input resource employed exceeds the amount available. D. Equal distances along a given process ray indicate equal output quantities. E. Nonbinding constraints are constraints that intersect at the optimum solution.