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: Ophthalmology
In cavernous sinus thrombosis, first nerve to be affected is: September 2012 
Select and explain. 
A. 6th, B. 5th, C. 4th, D. 3rd
A: 6th
Answer: A: 6th 
Explanation: Ans. A i.e. 6th