A Dietician Is Asked to Design a Special Diet Supplement $31 X + 20 Y \geq 300$

Multiple Choice

A dietician is asked to design a special diet supplement using two foods. Each ounce of food X contains 31 units of calcium and each ounce of food Y contains 20 units of calcium. The minimum daily requirement in the diet is 300 units of calcium. Write a linear inequality that represents the different numbers of units of food X and food Y required.

A) $31 X + 20 Y \geq 300$
B) $20 X + 31 Y \geq 300$
C) $31 X - 20 Y \geq 300$
D) $31 X + 20 Y \geq 249$
E) $11 X + 20 Y \geq 300$