Let f(x) = 2 (a) Find the derivative, f' (x). (b) Find f' ( - 2). . . . (a) What is the first step in finding the derivative of f(x) = X A. Rewrite the function in the form f(x) = x . O B. Rewrite the function in the form f(x) = rx. O C. Rewrite the function in the form f(x) = -. O'D. Substitute x + h for x in the original function