This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
[{'content': 'Which of the following is a branch from the root of the brachial plexus? \nSelect and explain. \nA. Nerve to subclavius, B. Suprascapular nerve, C. Dorsal scapular nerve, D. Anterior thoracic nerve', 'role': 'user'}, {'content': 'Answer: C \nExplanation: .', 'role': 'assistant'}]