The graph illustrates how the displacement of a particle in a wave changes with time. Which statement is true?
- AThe wave has an amplitude of $2\,\text{cm}$ and could be either transverse or longitudinal.
- BThe wave has an amplitude of $2\,\text{cm}$ and must be transverse.
- CThe wave has an amplitude of $4\,\text{cm}$ and could be either transverse or longitudinal.
- DThe wave has an amplitude of $4\,\text{cm}$ and must be transverse.