Which of the Following Is Not True of the Muscular

Which of the following is not true of the muscular system?

A) It depends upon calcium stored and released from the skeletal system.
B) It depends upon calcitonin and parathyroid hormone levels to maintain calcium homeostasis.
C) It depends upon the integumentary system to protect muscles.
D) It depends upon the cardiovascular system to provide the hemoglobin stored in slow muscle fibers.
E) It depends upon the nervous system to stimulate skeletal muscle tissue to contract.