The graph indicates how displacement changes with distance for a progressive wave at a single moment in time. The period of the wave is $91\,\text{ms}$. What can be deduced about the wave?
- AIt has a velocity of $0.44\,\text{m s}^{-1}$ and a frequency of $11\,\text{Hz}$.
- BIt has a velocity of $0.55\,\text{m s}^{-1}$ and a wavelength of $5.0\,\text{cm}$.
- CIt is longitudinal and has a frequency of $11\,\text{Hz}$.
- DIt is transverse and has a wavelength of $4.0\,\text{cm}$.