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: Anatomy
[{'content': 'Which of the following muscle is derived from 1st pharyngeal arch ? (2019) \nSelect and explain. \nA. Anterior belly of digastric, B. Posterior belly of digastric, C. Stylopharyngeus, D. Tensor tympani', 'role': 'user'}, {'content': 'Answer: A \nExplanation: .', 'role': 'assistant'}]