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: Pathology
Acridine orange is a fluorescent dye used to bind: 
Select and explain. 
A. DNA and RNA, B. Protein, C. Lipid, D. Carbohydrates
A: DNA and RNA
Answer: A: DNA and RNA 
Explanation: . DNA and RNA