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': 'Keratomalacia includes the following except: \nSelect and explain. \nA. Night blindness, B. Severe pain in the eye, C. Xerosis of the cornea, D. Perforation of cornea', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Severe pain in the eye', 'role': 'assistant'}]