Which statement about central canals and perforating canals is correct?

• A. The central canal runs through the center of the osteon, while perforating canals allow nutrients to diffuse from the central canal to the osteocytes in lacunae.
• B. Because the blood vessels in central canals all run parallel, perforating canals are necessary to connect them.
• C. Perforating canals carry the nerve supply for the bone, while central canals carry the blood supply.
• D. Perforating canals run parallel to the osteon, while the central canals connect perforating canals to the medullary cavity in the center of the bone.