To two significant figures, what are the period, frequency and amplitude of the wave shown on the graph?
- Aperiod $0.0027\ \text{s}$, frequency $370\ \text{Hz}$, amplitude $0.0067\ \text{m}$
- Bperiod $0.0031\ \text{s}$, frequency $320\ \text{Hz}$, amplitude $0.013\ \text{m}$
- Cperiod $0.0035\ \text{s}$, frequency $290\ \text{Hz}$, amplitude $0.0067\ \text{m}$
- Dperiod $0.0042\ \text{s}$, frequency $240\ \text{Hz}$, amplitude $0.013\ \text{m}$