As a Muscle Is Stretched, the Z Discs Move Further

Multiple Choice

As a muscle is stretched, the Z discs move further apart, and the I band increases in size. What is the role if titin in this situation?

A) It prevents the sarcomere from being pulled apart as this stretching occurs.
B) It prevents the thick filaments from sliding over the thin filaments.
C) It moves the tropomyosin molecule from the actin filament.
D) It is required for the release of ATP in this process.