4. An electronics store makes a profit of $72 for every standard CD player sold and $90 for every portable CD player sold. The manager’s target is to make at least $360 a day on sales from standard and portable CD players. Write an inequality that represents the numbers of both kinds of CD players that can be sold to reach or exceed the sales target. Let s represent the number of standard CD players and p represent the number of portable CD players.

A. 72s + 90p ≥ 360

B. 90s + 72p ≤ 360

C. 90s + 72p ≥ 360

D. 72s + 90p ≤ 360