The correct option is B Volkmann canals
The Haversian canal also known as osteon is the structural unit of compact bone, consisting of concentric bone layers, called as lamellae, which surrounds the long hollow passageway. It contains small blood vessels responsible for the blood supply to the osteocytes. The spaces between adjacent osteons are filled with interstitial lamellae, layers of bone that are remnants of previous Haversian systems. The transverse vessels, which run perpendicular to the long axis of the cortex, are called as Volkmann canals. Volkmann canals connect adjacent osteons and also connect the blood vessels of the Haversian canals with the periosteum, the tissue covering the bone's outer surface.
Thus, the correct answer is option B.