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
A 1-year-old girl presents with a 2-day history of fever, vomiting and watery, non-bloody diarrhoea. O/E, she appeared dehydrated. Which of the following best describes the most likely infecting organism? 
Select and explain. 
A. It has partially ds-circular DNA genome, B. It has segmented ds-circular RNA genome, C. It has a ss-circular RNA genome, D. It has a ss-RNA genome
B: It has segmented ds-circular RNA genome
Answer: B: It has segmented ds-circular RNA genome 
Explanation: Ans. B. It has segmented ds-circular RNA genomeRota virus* Genome: 11 segments of ds RNA* Resemble wheel with short spokes* 7 major groups: A-GPathogenesis:- Destruction of enterocytes- Enterotoxin- Enteric neuron activationLab diagnosis:-. Detection of viral antigen in stool- IgM/IgG ab- PCR