<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 21-year-old woman is brought to the emergency department following a motor vehicle collision. She has significant pain and weakness in her right arm and hand. Physical examination shows multiple ecchymoses and tenderness in the right upper extremity. She is able to make a fist, but there is marked decrease in grip strength. An x-ray of the right upper extremity shows a midshaft humerus fracture. Which of the following structures is most likely injured?? A: Median nerve, B: Radial nerve, C: Radial artery, D: Brachial artery, E: Ulnar nerve,  <response>: This is a clinical case of a 21-year-old woman who was involved in a motor vehicle collision and sustained a midshaft humerus fracture in her right arm. She is presenting with pain, weakness, ecchymoses, and decreased grip strength in her right hand. Based on the location of the humerus fracture and her symptoms involving the hand, this indicates a likely injury to a nerve that innervates the muscles of the hand and forearm. The radial nerve runs along the humerus and innervates the muscles that control wrist and finger extension. Injury to the radial nerve would cause weakness in grip strength and difficulty extending the wrist and fingers, which fits this patients presentation.B: Radial nerve 