The graph illustrates the way velocity $v$ changes with time $t$ for a bungee jumper. At which point is the bungee jumper briefly at rest, and at which point is her acceleration zero?
- Ajumper at rest: Q, jumper with zero acceleration: P
- Bjumper at rest: Q, jumper with zero acceleration: R
- Cjumper at rest: R, jumper with zero acceleration: Q
- Djumper at rest: R, jumper with zero acceleration: R