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: Medicine
[{'content': 'Treatment of chlamydia pneumonia is : \nSelect and explain. \nA. Erythromycin, B. Ceftriaxone, C. Penicillin, D. Sulphonamide', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer is A (Erythromycin): Erythromycin is the answer of choice here as Doxycycline has been not provided in the options.', 'role': 'assistant'}]