All of these statements about front wheel toe change during wheel jounce and rebound are true EXCEPT:
a. If one front wheel toes in and the opposite front wheel toes out during front wheel jounce and rebound, the tie rod height is unequal.
b. If both front wheels toe in or toe out a small, equal amount during front wheel jounce and rebound, the tie rods are parallel to the lower control arms.
c. The improper toe change during front wheel jounce and rebound may cause bump steer.
d. Improper toe change during front wheel jounce and rebound may be caused by a worn upper strut mount.