What is the order, from narrowest to widest graph, of the quadratic functions f(x) = -10x^2, f(x) = 2x^2, f(x) = 0.5x^2
A. f(x) = -10x^2, f(x) = 2x^2, f(x) = 0.5x^2
B. f(x) = 2x^2, f(x) = -10x^2, = 0.5x^2
C. f(x) = 0.5x^2, f(x) = 2x^2, f(x) = -10x^2
D. f(x) = 0.5x^2, f(x) = -10x^2, f(x) = 2x^2