Assertion: A one mola solution prepared at `20^(@)`C will retain the same molality at `100^(@)`C, provided there is no loss of solute or solvent on heating.
Reason: Molality is independent of temperature.
A. (a)If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. (b)If both assertion and reason are true and the reason is not the correct explanation of the assertion.
C. (c )If assertion is true but reason is false.
D. (d)If assertion is false but reason is true.