The Optimal Length of a Skeletal Muscle Is

The optimal length of a skeletal muscle is

A) The length at which the muscle can generate its maximal tetanic tension
B) The shortest length the muscle can achieve while attached to bone, because the amount of overlap between thick and thin filaments is maximal then
C) Approximately the same as its resting length
D) Both the length at which the muscle can generate its maximal tetanic tension and the shortest length the muscle can achieve while attached to bone, because the amount of overlap between thick and thin filaments is maximal then are correct
E) Both the length at which the muscle can generate its maximal tetanic tension and approximately the same as its resting length are correct