Refer to the computer solution to fiigure 3.18.

a) Interpret the ranges of optimality for the objective function coefficients:

b) Suppose that the manufacturing cost increases to $11.20 per case for model A. What is the new optimal solution?

c) Suppose that the manufacturing cost increases to $11.20 per case for model A and the manufacturing cost for model B decreases to $5 per unit. Would the optimal solution change?