Please choose the correct ending to complete the given sentence: Doing crunches: There's a young man wearing a blue shirt and black hat demonstrating on a bed and talking about fitness. he

Ending1: is demonstrating on a bicycle that is on an exercise platform and then walking in a court area. Ending2: shows a new product called honing the arm strength. Ending3: is talking while sitting in a reseed room and laying on black plastic sheets. Ending4: is talking about fitness as he lays on his back to demonstrate crunches by doing actions with his arms.

Answer format: ending1/ending2/ending3/ending4