An electromagnetic wave travels at a speed of $3.0 \times 10^{8}\,\text{m s}^{-1}$ and has a wavelength of $10\,\text{cm}$. What is the wave frequency?
- A$3.3 \times 10^{-10}\,\text{Hz}$
- B$3.3 \times 10^{-8}\,\text{Hz}$
- C$3.0 \times 10^{7}\,\text{Hz}$
- D$3.0 \times 10^{9}\,\text{Hz}$