f(x) = x-19, x0 = 19 the given initial approximation to compute the approximations x and X2. Write the formula for Newton's method for the given function. Choose the correct answer below. OA. Xn+1=x+ X-19 2Xn 2Xn B. Xn+1=xn X-19 Xn - 19 2Xn C. Xn+1=xn OD. Xn+1=x-x-19 Use the given initial approximation to compute the approximations x and X2. x = (Do not round until the final answer. Then round to six decimal places as needed.) X2 = (Do not round until the final answer. Then round to six decimal places as needed.)