<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:An 82-year-old woman presents to the emergency department after a fall. Imaging reveals diffuse trauma to the left humerus from the midshaft to the olecranon process with shearing of the periosteum. The orthopedic surgeon suggests a follow-up in 2 weeks. In that time, the patient develops worsening pain. At follow-up, she is found to have diffuse bone necrosis from the midshaft of the left humerus to the olecranon process. with no involvement of the distal arm structures. Which of the following structures must have been damaged to cause this diffuse bone necrosis?? A: Haversian canal, B: Brachial artery, C: Volkmanns canal, D: Ulnar nerve, E: Epiphyseal plate,  <response>: This is a clinical vignette describing an elderly woman who sustained a traumatic injury to her left arm resulting in diffuse bone necrosis from the midshaft of the humerus to the olecranon process. The key finding is the diffuse bone necrosis affecting a large area of the arm bones. This indicates that the blood supply to this region was disrupted. The blood supply to the humerus and ulna bones comes from the nutrient arteries that run through Volkmanns canals. Damage to these arteries can lead to ischemic necrosis of the bone. None of the other answer choices describe structures that would cause such diffuse bone necrosis when damaged.C: Volkmanns canal 