Bluetongue virus has

Answer: Option B

Bluetongue virus has 27 serotypes.
Bluetongue disease is a noncontagious, insect-borne, viral disease of ruminants, mainly sheep and less frequently cattle, yaks, goats, buffalo, deer, dromedaries and antelope.
Bluetongue is caused by the pathogenic virus, Bluetongue virus (BTV), of the genus Orbivirus, of the Reoviridae family. Twenty-seven serotypes are now recognised for this virus. The twenty-seven serotypes are the result of the high variability of a single outer capsid protein, VP2.