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': "Horner's syndrome consists of - \nSelect and explain. \nA. Miosis and enophthalmos, B. Miosis and exophthalmos, C. Miosis and proptosis, D. Miosis and ptosis", 'role': 'user'}, {'content': "Answer: D \nExplanation: Horner's syndrome is characterized by classical triad of ipsilateral ptosis, miosis and anhydrosis.\nOption 'a' is also correct as enophthalmos also occurs. However, it is not included in the classical triad of Homer's syndrome. So, best answer here is option 'd'.", 'role': 'assistant'}]