How does the sliding filament model explain muscle contraction?

• A. Actin filaments shorten while myosin filaments remain the same length.
• B. Both actin and myosin filaments shorten during contraction.
• C. Actin and myosin filaments slide past each other, shortening the sarcomere without changing the length of the filaments.
• D. Myosin filaments shorten while actin filaments remain the same length.

Answer: (C)