Why Does Ocean Swell Tend to Consist of Waves of Similar

Multiple Choice

Why does ocean swell tend to consist of waves of similar sizes?

A) Swell is controlled by water depth.
B) Swell is controlled by wind speed, and all of the waves that comprise swell arise from the same wind cell.
C) Wavelength is similar for all ocean waves.
D) Waves far from their storm source tend to be sorted into groups of similar waves.