Tolong jawab dong... thx :)

4x+2y=5   | ×1
4x+6y=15 | ×2
------------- -
    -4y = -10
       y = 2,5
4x + 2y = 5
2x + 5 = 5
x = 0
p = x
q = y
(p,q) = (x,y) = (0, 2 1/2)

∴ jawabannya C