Write the Word or Phrase That Best Completes Each Statement $\mathrm { A }$

Write the word or phrase that best completes each statement or answers the question.
-The liquid portion of a diet is to provide at least 300 calories, 36 units of vitamin $\mathrm { A }$ , and 90 units of vitamin C daily. A cup of dietary drink X provides 60 calories, 12 units of vitamin $A$ , and 10 units of vitamin $C$ . $A$ cup of dietary drink $Y$ provides 60 calories, 6 units of vitamin $A$ , and 30 units of vitamin $C$ . Set up a system of linear inequalities that describes the minimum daily requirements for calories and vitamins. Let $x =$ number of cups of dietary drink $X$ , and $y =$ number of cups of dietary drink $Y$ . Write all the constraints as a system of linear inequalities.

A) $60 x + 60 y \geq 300$
$12 x + 6 y \geq 36$
$10 x + 30 y \geq 90$
$x \geq 0$
$y \geq 0$
B) $60 x + 60 y > 300$
$12 x + 6 y > 36$
$10 x + 30 y > 90$
$x > 0$
$y > 0$

C) $60 x + 60 y \geq 300$
$12 x + 6 y > 36$
$10 x + 30 y \geq 90$

D) $60 x + 60 y \leq 300$
$12 x + 6 y \leq 36$
$10 x + 30 y \leq 90$
$x \geq 0$
$y \geq 0$