The combined equation of bisector of angles between the lines L1 and L2 is 2x2 – 3xy – 2y2 – x + 7y – 3 = 0. P(4, – 3) is a point on L1 . If the equation of obtuse angle bisector is ax + by – 3 = 0, then
(A) |a – b| = 9
(B) a2 + b2 = 45
(C) a2 – b2 = 27
(D) None of these
