This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Conjunctiva, Subject name: Ophthalmology
[{'content': 'Drug of choice of trachoma is- \nSelect and explain. \nA. Penicillin, B. Sulfonamide, C. Tetracyline, D. Chloramphenicol', 'role': 'user'}, {'content': 'Answer: C \nExplanation: 1. Topical therapy regimes. It is best for individual cases. It consists of 1 percent tetracycline or 1 percent erythromycin eye ointment 4 times a day for 6 weeks or 20 percent sulfacetamide eye drops three times a day along with 1 percent tetracycline eye ointment at bed time for 6 weeks. 2.Systemic therapy regimes. Tetracycline or erythromycin 250 mg orally, four times a day for 3-4 weeks or doxycycline 100 mg orally twice daily for 3-4 weeks ref: A K KHURANA OPTHALMOLOGY,E4, Page-67', 'role': 'assistant'}]