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: Gynaecology & Obstetrics
[{'content': 'In chlamydial cervicitis drug of choice is : \nSelect and explain. \nA. Tetracycline, B. Septran, C. Chlomphenicol, D. Erythromycin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Tetracycline', 'role': 'assistant'}]