A company dyes two sizes of rugs. A small rug requires 4 hours for dyeing and a medium-size rug requires 6 hours for dyeing. The dyers have to make at least 20 rugs, and they must do it in less than 120 hours. Let x equal small rugs and y equal medium rugs. Which of the following inequalities can be paired with x + y ≥ 20 to create a system that represents this situation? (5 points)
A. 6x + 4y < 120
B. 4x + 6y < 120
C. 6x + 4y > 120
D. 4x + 6y > 120