Assertion (A): The warmer portions of the water are less dense and therefore, they rise.
Reason (R): The cooler portions of the water fall because they are denser.

Options

A. If (A) and (R) are correct and (R) is the correct explanation of (A)
B. If (A) and (R) are correct but (R) is not the correct explanation of (A)
C. If (A) is true but (R) is false
D. If (A) is false but (R) is true

Answer

B