For a sarcomere of a skeletal muscle, define the following terms: A is the length of the A Band; H is the length of the H Zone; I is the total length of the I Bands in the sarcomere. When the length of the sarcomere increases during a lengthening of the entire muscle,
A. The value of A remains constant.
B. The value of A plus the value of I (= A + I) remains constant.
C. The value of A minus the value of H (= A - H) decreases.