MathematicsEasy249×since 2002Q2491If the lines x = ay + b, z = cy + d and x = a'z + b', y = c'z + d' are perpendicular, then :Aab' + bc' + 1 = 0Bcc' + a + a' = 0Cbb' + cc' + 1 = 0Daa' + c + c' = 0Check answerSkip