Please choose the correct ending to complete the given sentence: Rock climbing: A man in a blue coat is talking outside by a rock. He is wearing a rock climbing harness. he

Ending1: is climbing up a sheer rock cliff. Ending2: is climbing up the rock. Ending3: jumps up and down on the rock, doing stunts. Ending4: begins climbing up the rock.

Answer format: ending1/ending2/ending3/ending4