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: Ophthalmology
[{'content': "Which pa of orbicularis oculi is known as Horner's muscle: \nSelect and explain. \nA. Orbital, B. Lacrimal, C. Temporal, D. Muller's muscle", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Lacrimal', 'role': 'assistant'}]