Using the Joint Reaction Force Simplifies Our Analysis Because It

Using the joint reaction force simplifies our analysis because it is derived from the net force that is transmitted from one segment to the other. Which of the following statements regarding joint reaction force is incorrect?

A) We cannot tell from the net forces and moments how the load is shared between the various internal structures of the segment.
B) The net force may represent many different forces, such as muscles, ligaments and bone-on-bone contacts.
C) This approach does not allow the direct calculation of the actual forces acting on joints and bones and within muscles and other soft tissues.
D) Joint reaction force as such is a real occurrence and can be directly measured.