Please choose the correct ending to complete the given sentence: Polishing forniture: An introduction comes onto the screen for a video about how to clean a butcher block. a woman

Ending1: then comes to show how to quickly clean a knife using a colander. Ending2: is shown banging down a block with a mallet while chopping it with a hammer. Ending3: comes onto the screen and begin to explain the process. Ending4: is seen mixing ingredients in a bowl and mixing sauce.

Answer format: ending1/ending2/ending3/ending4