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': 'Posterior belly of digastric is supplied by \nSelect and explain. \nA. Facial nerve, B. Mandibular nerve, C. Glossopharyndeal nerve, D. Trochlear nerve', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is `a' i.e., Facial nerve", 'role': 'assistant'}]