The diagram depicts a stationary wave on a string. Three nodes, $N_1$, $N_2$ and $N_3$, are shown on the stationary wave. Which statement is correct?
- AAll points on the string vibrate in phase.
- BAll points on the string vibrate with the same amplitude.
- CPoints equidistant from $N_2$ vibrate with the same frequency and in phase.
- DPoints equidistant from $N_2$ vibrate with the same frequency and the same amplitude.