Here's a problem to solve: Some chemical reactions absorbed energy, while others release energy. Of the chemical reactions in the burning coal and exploding fireworks, which will release energy?

Among the 4 following options, which is the correct answer?

- A: Burning coal only
 
- B: Exploding fireworks only
 
- C: Both burning coal and exploding fireworks
 
- D: Neither burning coal nor exploding fireworks
 