The graph of a linear function is given below. A bidirectional diagonal arrow rises through the points (negative 8, negative 1), (negative 5, 0), (0 2), (3, 3), (5, 4), (7 5) and (9, 5 point 8) on the x y coordinate plane. What is the zero of the function? A. -5 B. 2/5 C. 2 D. 5/2