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: Microbiology
The viruses causing gastroenteritis are - 
Select and explain. 
A. Rotavirus, B. Norwalk virus, C. Adenovirus, D. All
D: All
Answer: D: All 
Explanation: Ans. is 'a' i.e., Rotavirus; 'b' i.e., Norwalk virus; 'c' i.e., Adenovirus Virus causng gastroenteritis Rota virus * Norwalk virus Entero virus 1) Corona virus Adeno virus 2) Calci virus