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
A recurrent bilateral conjunctivitis occurring with the onset of hot weather in young boys with symptoms of burning, itching and lacrimation with polygonal raised areas in palpebral conjunctiva is 
Select and explain. 
A. Trachoma, B. Phlyctenular conjunctivitis, C. Mucopurulent conjuctivitis, D. Vernal conjunctivitis
D: Vernal conjunctivitis
Answer: D: Vernal conjunctivitis 
Explanation: VKC is an allergic conjunctivitis due to exogenous antigen, common in small boys REF:Refer Khurana 6th edition page number 61