Please choose the correct ending to complete the given sentence: Rock climbing: A man comes onto the screen to introduce a video about rock climbing. he

Ending1: starts talking about how to stand on his shoulders and then on a rock in front of the rocks. Ending2: gets onto the rock and starts to show several different techniques for rock climbing. Ending3: goes to a small ledge on the wall and drills a hole into the rock. Ending4: shows the idea how to do a rock climbing stunt.

Answer format: ending1/ending2/ending3/ending4