Which of the Following Statements Is True Regarding Influenza

Multiple Choice

Which of the following statements is true regarding influenza?

A) Only the elderly and young children get influenza.
B) The "C" form of the virus is most virulent.
C) If you contract one form of influenza, you may develop immunity to it, but you may not necessarily be immune to other forms of the disease.
D) Flu vaccinations are always effective if they are given in the summer, before the actual flu season starts.