This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharynx, Subject name: Anatomy
The most common organism causing acute tonsillitis is: 
Select and explain. 
A. Staph aureus, B. Anaerobes, C. Hemolytic streptococci, D. Pneumococcus
C: Hemolytic streptococci
Answer: C: Hemolytic streptococci 
Explanation: Group A beta hemolytic streptococci is the M/C bacteria causing acute tonsillitis. other causes are: staph aureus pnuemococci H. Influenza Ref Dhingra 5/e,p 341,6/e,p 288.