P9.1 LP Basics. Indicate whether each of the following statements is true orfalse 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.