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': 'In 3-glass urine test, there is thread in the first glass. What is the probable diagnosis: September 2010 \nSelect and explain. \nA. Cystitis, B. Prostatitis, C. Urethritis, D. Pyelonephritis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B: Prostatitis', 'role': 'assistant'}]