Arrange the reasons for the proof in the correct order. prove: if two points are collinear, then the two points lie on the same line. a. by definition, the two lines are not collinear. b. if two points do not lie on the same line, then they are not collinear. therefore, if two points are collinear, then they lie on the same line (proof by contraposition). c. assume that the two points lie on different lines. a. a, c, b b. b, c, a c. c, a, b d. c, b, a