Question: Each of the following is true regarding Pneumocystis carinii. Which statement is false?
A. It lives as a commensal in most humans
B. It is a common cause of community acquired pneumonia
C. It is an AIDS defining illness in patients with HIV
D. It caused pneumonia in malnourished children after World War II
E. The most sensitive way of making the diagnosis is with a direct immunoflourescence stain on sputum or Bronchoalveolar lavage