Molarity and molality of a solution of \( \mathrm{NaOH} \) is calculated. If now temperature of ...

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Molarity and molality of a solution of \( \mathrm{NaOH} \) is calculated. If now temperature of the solution is increased then which of the following statement(s) is/are correct?
(i) Molarity of solution decreases
(ii) Molality of the solution increases
(a) Both statements are correct
(b) Statement (i) is correct only
(c) Statement (ii) is correct only
(d) Both statements are incorrect.
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