This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteria, Subject name: Microbiology
[{'content': 'HP body is seen is - \nSelect and explain. \nA. Chlamydia trachomatis, B. Chlamydia psittaci, C. Chlamydia pneumoniae, D. Mycoplasma hominis', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Chlamydia trachomatis HP bodies are seen in:-i) Chlamydia trachomatis - Halberstaedter Prowazek (HP) bodyii) Molluscum contagiosum - Henderson paterson (HP) bodies.", 'role': 'assistant'}]