Which of the Following Statements Is Not True Regarding the "Kinetic

Which of the following statements is not true regarding the "Kinetic Chain Concept"?

A) a system can be both open and closed simultaneously
B) any one link in an extremity may be moved individually without significantly affecting other links if the chain is open
C) bony segments and their linkage system of joints may be likened to a chain
D) if the chain is closed then substantial movement of any one link cannot occur without substantial movement of the other links