Assertion (A) : Despite low evaporation and stable stratification of the atmosphere, salinity is high in polar regions.
Reason ( R) : Sea water freezes leaving the remaining water saline than before.

Options

A. Both A and R are individually true and R is the correct explanation of A
B. Both A and R are individually true but R is not the correct explanation of A
C. A is true but R is false
D. A is false but R is true