Which of the Following Best Defines Accessory Motions

Which of the following best defines accessory motions?

A) The extent to which a patient performs a squat maneuver while extending the arms above his or her head
B) The level to which a patient squats on one leg and returns to a standing position
C) The manner in which one articulating joint surface moves relative to another
D) The extent to which a patient can maintain a neutral alignment of limb segments while performing a dynamic movement
E) The manner in which malalignments and asymmetries are tested by viewing the body compared with a grid or plumb line