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: Microbiology
[{'content': 'Gonorrhoea is diagnosed by: September 2004 \nSelect and explain. \nA. Pili agglutination, B. CFT, C. Haemagglutination, D. All of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A i.e. Pili agglutination', 'role': 'assistant'}]