Consider the Whole Food Nutrition Center diet problem example discussed in Section 3.7 of Chapter 3. Use the Sensitivity Report for this LP model (shown in Screenshot 4-8 on page 150) to answer the following questions. Each question is independent of the others.

(a) What is the impact if the daily allowance for protein can be reduced to 2.9 units?

(b) Whole Food believes the unit price of grain A could be 5% overestimated and the unit price of grain B could be 10% underestimated. If these turn out to be true, what is the new optimal solution and optimal total cost?

(c) What is the impact if the reduction in the daily allowance for protein in (a) requires Whole Food to simultaneously increase the daily allowance of riboflavin to 2.20 units?