All of the Following Statements Concerning Contraction Are Correct EXCEPT

All of the following statements concerning contraction are correct EXCEPT which one?

A) The conversion of chemical energy into mechanical energy is the result of protein conformational changes.
B) In the energized state, the myosin headpiece contains both ADP and Pi.
C) An early event in contraction is the binding of calcium to troponin.
D) The thick filament shortens in length to accommodate the thin filament.
E) The myosin binding sites on F-actin are physically blocked by tropomyosin in the resting state.