A Dietitian Designs a Special Diet Supplement Using Two Different $\mathrm { X }$

Multiple Choice

A dietitian designs a special diet supplement using two different foods. Each ounce of food X contains 15 units of calcium, 10 units of iron, and 20 units of vitamin B. Each ounce of food Y contains 20 units of calcium, 10 units of iron, and 15 units of vitamin B. The minimum daily requirements for the diet are 360 units of calcium, 320 units of iron, and 370 units of vitamin B. Which combinations of foods X and Y below, if any, can be given to the patient to meet the minimum daily requirements? Combination I : 13 ounces of food $\mathrm { X }$ and 16 ounces of food $\mathrm { Y }$
Combination II : 11 ounces of food $X$ and 20 ounces of food $Y$
Combination II : 20 ounces of food $X$ and 23 ounces of food $Y$

A) Only combinations I and II meet the minimum daily requirement.
B) Only combinations II and III meet the minimum daily requirement.
C) Only combinations I and III meet the minimum daily requirement.
D) Only combination III meets the minimum daily requirement.
E) Combinations I, II, and III meet the minimum daily requirement.