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: Surgery
[{'content': 'Which is the earliest symptom of benign hypertrophy of prostate \nSelect and explain. \nA. Increased Frequency, B. Nocturia, C. Narrow stream, D. Incontinence', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Earliest feature of BPH is increased frequency.', 'role': 'assistant'}]