This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Conjuctiva, Subject name: Ophthalmology
Epidemic keratoconjunctivitis is caused by 
Select and explain. 
A. Corona virus, B. Epstien-Barr virus, C. Picorna virus, D. Adenovirus
D: Adenovirus
Answer: D: Adenovirus 
Explanation: Ans. d (Adenovirus). (Ref. Textbook of Microbiology by Anantanarayan, 6th/451)INFECTION BY ADENOVIRUS SyndromesPrinciple serotypes1Respiratory disease in children1, 2, 5, 62Sore-throat, febrile cold, pneumonia3, 4, 7, 14, 213ARDS in military recruits4, 7, 214Follicular (swimming pool) conjunctivitis3,75Epidemic kerato conjunctivitis sicca8, 19, 37Q6Diarrhoea40, 417Soft tissue sarcoma and bladder carcinoma18,198Gene therapy2,59AIDS43, 47