Which of the following statements about influenza viruses is FALSE:
Select one:
A. Influenza A viruses are major human pathogens, associated with epidemics and pandemics.
B. Influenza B viruses infect humans only.
C. Influenza A viruses infect birds and a wide variety of mammals, including humans, horses, and pigs.
D. Influenza B viruses are believed to be epidemiologically important; their reassortment with type A leads to pandemics.
E. Influenza C viruses infect humans, but are not believed to cause a severe disease.