Please choose the correct ending to complete the given sentence: Spinning: A stationary bike appears with the words "h8715 carbon bike gsg" above it. Video and photos of the bike are shown followed by a woman adjusting the seat of the bike. she

Ending1: continues adjusting the handles and the knees on the bike, then begins to move the bike. Ending2: adjusts the seat further for the pairs use. Ending3: puts on a heart monitor and starts using the connected bike. Ending4: moves the bike to the top of a stair and adjusts the pedals.

Answer format: ending1/ending2/ending3/ending4