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 is characterised by all of the following except: \nSelect and explain. \nA. Contralateral enophthalmos, B. Ipsilateral miosis, C. Ipsilateral ptosis, D. Anhydrosis of the affected side of face", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Contralateral enophthalmos', 'role': 'assistant'}]