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
Percentage of silver Nitrate used in Credes method 
Select and explain. 
A. 1 percnt, B. 0.5Percnt, C. 1.5 percnt, D. 2 percnt
A: 1 percnt
Answer: A: 1 percnt 
Explanation: Credes method is used to prevent gonococcal infection in a newborn Refer: Khurana 6th edition page number 64