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: Medicine
Firefilies produce light due to: 
Select and explain. 
A. NADH, B. GTP, C. ATP, D. Phosphocreatinine
C: ATP
Answer: C: ATP 
Explanation: C i.e. ATP In firefly, ATP is used in a set of reactions that conve chemical energy into light energyQ. So fire fly flashes are glowing repos of ATP (i.e. flashes in firefly indicate presence of ATP & SOLIFE)Q