Chord KL of a circle subtends equal angles at points M and N on the circumference. What can be concluded about the positions of M and N with respect to chord KL?
(a) M and N lie on the perpendicular bisector of KL.
(b) M and N lie in the same segment determined by KL.
(c) M and N lie in different segments separated by KL.
(d) KL must be the diameter of the circle.