Please choose the correct answer to the question: A carpenter covered a piece of wood with a thin sheet of paper. He struck the covered piece of wood with a hammer. The impact left a small hole in the paper that smelled of smoke. Which kind of energy transfer did this event most likely demonstrate?

Answer1: chemical to thermal Answer2: mechanical to thermal Answer3: mechanical to chemical Answer4: chemical to mechanical

Answer format: answer1/answer2/answer3/answer4