The graph of the function y = x^2-x-2 shown below. Which of the following shows the correct key features of the graph? A) vertex(1/2,-2 1/4), axis of symmetry x=1/2, x intercepts at (-1,0) and (2,0), y intercept at (-2,0).
B) vertex (1/2,-2 1/4), axis of symmetry x=-2 1/4, x intercepts at (-1,0), and (-2,0), y-intercept at (0,2).
C) vertex (1/2,-2 1/4), axis of symmetry x=-2 1/4, x intercepts at (-1,0) and (2,0), y-intercept at (0,-2).
D) vertex (1/2,-2 1/4), axis of symmetry x= 1/2, x intercepts at (-1,0) and (2,0), y-intercept at (0,-2)