A sound wave is produced by a loudspeaker that moves backwards and forwards $96\,000$ times in one minute. The speed of sound is $320\,\text{m s}^{-1}$. What is the wavelength of this sound wave?
- A$0.20\,\text{m}$
- B$5.0\,\text{m}$
- C$300\,\text{m}$
- D$18\,000\,\text{m}$