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
Viral enterotoxin is detected as a possible of mechanism pathogenesis in - 
Select and explain. 
A. Adenovirus, B. Rotavirus, C. Calcivirus, D. Astrovirus
B: Rotavirus
Answer: B: Rotavirus 
Explanation: Ans. is b i.e., Rotavirus Pathogenesis Three different mechanisms have recognized 1. Destruction of mature enterocytes (Major pathogenic mechanism) Enterotoxin - A non-structural `rotavirus protein, NSP4, functions as an enterotoxin and contributes to secretory diarrhea. Activation of enteric nervous system - Rotavirus may evoke fluid secretion through activation of enteric nervous system in the intestinal wall.