Electromagnetic spectrum — practice question

A radio transmitter emits waves at a frequency of $200\ \text{kHz}$. Find the wavelength of these radio waves.

• A$6.7 \times 10^{-4}\ \text{m}$
• B$1.5\ \text{m}$
• C$1.5 \times 10^{3}\ \text{m}$
• D$1.5 \times 10^{6}\ \text{m}$