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': 'Percentage of silver Nitrate used in Credes method \nSelect and explain. \nA. 1 percnt, B. 0.5Percnt, C. 1.5 percnt, D. 2 percnt', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Credes method is used to prevent gonococcal infection in a newborn Refer: Khurana 6th edition page number 64', 'role': 'assistant'}]