What would cause surface ocean water to have a higher salt content?

A.
Surface ocean water will have a higher salt content from the melting of sea ice

B.
Surface ocean water will have a higher salt content from low rates of evaporation and high rates of precipitation.

C.
Surface ocean water will have a higher salt content from water flowing out of a river into the ocean

D.
Surface ocean water will have a higher salt content from high rates of evaporation and low rates of precipitation