How can the length of actin and myosin filaments remain constant while the sarcomere shortens?

• A. The filaments slide past each other, changing their relative positions without altering their lengths.
• B. The filaments are compressed by external forces, reducing their length.
• C. The filaments contract and expand, maintaining their overall length.
• D. The filaments dissolve and reform at shorter lengths.

Answer: (A)