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': 'Infectious pa of chlamydia is - \nSelect and explain. \nA. Elementary body, B. KP body, C. Reticulate body, D. None', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is `a' i.e., Elementary body", 'role': 'assistant'}]