Gus is buying juice drinks, x, and snack packs, y, for a school picnic. The system of inequalities models how many of each item Gus needs to buy and how much he can spend. Which of the following points represents a viable solution to the system?

x + y ≥ 150
1.5x + 3.5y ≤ 600
A. (−10, 170)
B. (80, 90)
C. (250, −50)
D. All real whole numbers, with x ≥ 0 and y ≥ 0