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: Microbiology
Metachromatic granules are stained by? 
Select and explain. 
A. Ponder's stain, B. Negative stain, C. Gram's stain, D. Leishman stain
A: Ponder's stain
Answer: A: Ponder's stain 
Explanation: Ans. is 'a' i.e., Ponder's stain