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
Phlectenular conjunctivitis is - 
Select and explain. 
A. Type I reaction, B. Type II reaction, C. Type III reaction, D. Type IV reaction
D: Type IV reaction
Answer: D: Type IV reaction 
Explanation: Answer- D. Type IV reactionIt is type IV (delayed) hypersenstivity