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': 'Lowest incidence of trachoma is seen in: \nSelect and explain. \nA. Punjab, B. Rajasthan, C. Uttar Pradesh, D. Orissa', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Punjab', 'role': 'assistant'}]