A, b, c, and d have the coordinates (-8, 1), (-2, 4), (-3, -1), and (-6, 5), respectively. which sentence about the points is true? a. a, b, c, and d lie on the same line. b. ab and cd are perpendicular lines. c. ab and cd are parallel lines. d. ab and cd are intersecting lines but are not perpendicular. e. ac and bd are parallel lines.