What is the optimal solution for the following problem?

Maximize P = 3x + 15y

subject to 2x + 4y 20

5x + 2y 10

and x 0, y 0.

(x, y) = (0, 3)

(x, y) = (0, 5)

(x, y) = (2, 0)

(x, y) = (1, 5)

(x, y) = (0, 0)