Use the technique of completing the square to transform the quadratic equation below into the form ( x+ c)^2 = . 42x^2 + 16x + 12 = 0 Select the best answer from the choices provided. A. (x + 4)^2 = -1 B. (x + 16)^2 = -1 C. (x + 16)^2 = 1 D. (x + 2)^2 = 1