Given below are two statements, one labelled as Assertion (A) and the other labelled as Reason (R). Choose the correct answer from the options given below.

Assertion (A): The molality of KCl solution at 25°C is 5 m. (Given molar mass of KCl is 74.5 g/mol). When the solution is cooled to -10°C, the molality of the solution remains unchanged.
Reason (R): The molality of the solution does not change with temperature as the mass remains unaffected with temperature.

1. A Both \(A\) and \(R\) are true but \(R\) is not the correct explanation of \(A\)
2. B \(A\) is true but \(R\) is false
3. C A is false but R is true
4. D Both \(A\) and \(R\) are true, \(R\) is the correct explanation of \(A\)