A triangle has vertices at A(-7, 6), B(4, 9), C(-2, - 3). What are the coordinates of each vertex if the triangle is translated 4 units right and 6 units down? A. A'(-11, 12), B'(0, 15), C '(-6, 3) B. A'(-11, 0), B'(0, 3), C '(-6, - 9) C. A'(-3, 12), B'(8, 15), C '(2, 3) D. A'(-3, 0), B'(8, 3), C '(2, - 9)