Here's a problem to solve: Rossby waves are slow-moving, long ocean waves. What feature of a Rossby wave would change if the wavelength was doubled?

Among the 4 following options, which is the correct answer?

- A: The amplitude would double.
 
- B: The frequency would double.
 
- C: The amplitude would decrease by half.
 
- D: The frequency would decrease by half.
 