This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
[{'content': 'Rotavirus is detected by - \nSelect and explain. \nA. Antigen in stool, B. Antibody in serum, C. Deminstration of virus, D. Stool culture', 'role': 'user'}, {'content': 'Answer: A \nExplanation: rota virus is detected by antigen in stool by ELISA,CF REF:ANATHANARAYANAN MICROBIOLOGY NINTH EDITION PAGE.561', 'role': 'assistant'}]