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': 'The posterior belly of the digastric muscle is supplied by the: \nSelect and explain. \nA. Facial nerve, B. Vagus nerve, C. Mylohyoid nerve, D. Inferior alveolar nerve', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]