Here's a problem to solve: A construction worker hit a solid steel wall with a sledgehammer, but the wall did not move. Part of the energy exerted by the worker

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

- A: was destroyed by the steel wall.
 
- B: was converted into heat.
 
- C: disappeared into the atmosphere.
 
- D: was stopped by the hard surface.
 