Using a 3D printer, Emery makes the chocolate mold shown by copying different shapes. Complete parts a and b below. B ..... OA. B andE B. A and C C. A and G C and G D. E. D and I F. A and H G. B and D O H. A and I B and I J. E and F b. Describe a composition of rigid motions that maps the congruent shapes. are congruent by a reflection across the vertical line through the center of the mold. are congruent by a 180 rotation about the midpoint of the vertical line segment between their centers. are congruent by a reflection across the vertical line through the center of the mold followed by a vertical translation. V are congruent by a horizontal translation. are congruent by a glide reflection across the horizontal ne through the center of the mold. V are congruent by a 45° rotation about the center of the first object, followed by a translation to the right, and then a translation down. V are congruent by a 45° rotation about the center of the first object, followed by a translation to the left, and then a translation down.