Assertion (A) When NaCl is added to water a depression in freezing point is observed.
Reason (R ) The lowering of vapour pressure of a solution causes depression in the freezing point.
A. Assertion and reason both are correct statements and reason is correcft explanation for assertion.
B. Assertion and reason both are correct statements but reason is not correct explanation for assertion.
C. Assertion is correct statement but reason is wrong statement.
D. Assertion and reason both are incorrect statements.