A dietitian in a hospital is to arrange a special diet using two foods. Each ounce of food M contains 32 units of calcium, 8 units of iron, and 8 units of vitamin A. Each ounce of food N contains 8 units of calcium, 8 units of iron, and 32 units of vitamin A. The minimum requirements in the diet are 432 units of calcium, 144 units of iron, and 240 units of vitamin A. If x is the number of ounces of food M used and y is the number of ounces of food N used, write a system of linear inequalities that reflects the conditions indicated. Find the set of feasible solutions graphically for the amounts of each kind of food that can be used. Ay 55- 50- 45- 40- Write an inequality for the constraint on calcium. 35- 32x + 8y 2 432 30- (Do not factor.) 25- Write an inequality for the constraint on iron. 20- 8x + 8y 2 144 15- (Do not factor.) 10- Write an inequality for the constraint on vitamin A. 5- 8x + 32y 2 240 0- 10 15 20 25 30 35 40 45 50 55 (Do not factor.) Which of the following inequalities are also needed, if any? A. x20 and y 20 O B. x2y O C. xs0 and ys0 Lo