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 <sep> (A) continues adjusting the handles and the knees on the bike, then begins to move the bike. (B) adjusts the seat further for the pairs use. (C) puts on a heart monitor and starts using the connected bike. (D) moves the bike to the top of a stair and adjusts the pedals.
C