The graph illustrates the variation of velocity $v$ with time $t$ for a bungee jumper. At which point is the bungee jumper briefly at rest, and at which point does she have zero acceleration?
- 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