Compare the definition of scale factor of a dilation to the definition of scale factor of two similar polygons. How are they alike? How are they different? Choose the correct answer below. OA. Each type is a constant ratio of corresponding lengths. For a dilation, the scale factor is always the ratio of an image length to a corresponding preimage length, while for similar figures, the scale factor ratio can relate the two figures in either order. OB. Each type of scale factor can only be written in a specific order. For a dilation, the scale factor is not constant, while for similar figures, the scale factor is constant. OC. While each type is a constant ratio of corresponding lengths, neither is constant. For a dilation, the scale factor is always the ratio of an image length to a corresponding preimage length, while for similar figures, the scale factor ratio can relate the two figures in either order. OD. Each type is a ratio of corresponding lengths. For a dilation, the scale factor is not constant, while for similar figures, the scale factor is constant.