Chemistry · EQUILIBRIUM

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): For ice-water equilibrium at \( 273\text{ K} \) and \( 1\text{ atm} \) in a thermos flask, the mass of ice and water remains constant over time. Reason (R): At equilibrium, both the melting of ice and freezing of water occur simultaneously at the exact same rate. In the light of the above statements, choose the correct answer from the options given below:

1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.