A.2/3rd of length of sarcomere so that muscle shortens by 1/3rd of its length during contraction
B.1/3rd of length of sarcomere so that muscle shortens by 2/3rd of its length during contraction
C.1/2 of length of sarcomere so that the muscle shortens 1/2 of it
D.3/4th of the length of sarcomere so that the muscle shortens by 1/4th of its length during contraction