This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': 'Concerning Brachial plexus, which of the following facts are true: \nSelect and explain. \nA. Formed by spinal nerve C5 - T1, B. Most common site of injury is upper trunk, C. It is surrounded by fascia derived from preveebral fascia, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A, B, C i.e. Formed by spinal nerve C5 - T1, Most common site of injury is upper trunk , Injury may occur during breech delivery, & Lower trunk injury results in hand deformity', 'role': 'assistant'}]