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': 'Muscle which dilates the palpebral apeure: \nSelect and explain. \nA. Orbicularis oculi, B. Orbicularis oris, C. Levator palpebrae superioris, D. Levator labii superioris', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The levator palpebrae superioris muscle elevates and retracts the upper eyelid.', 'role': 'assistant'}]