This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
In IMNCI, pneumonia is classified by- 
Select and explain. 
A. Fast breathing, B. Wheezing, C. Fever, D. Chest indrawing
A: Fast breathing
Answer: A: Fast breathing 
Explanation: None