Assertion (A): The temperature at which vapour pressure of a liquid is equal
to the external pressure is called boiling temperature.
Reason (R): At high altitude atmospheric pressure is high.
(i) Both A and R are true and R is the correct explanation of A.
(ii) Both A and R are true but R is not the correct explanation of A.
(iii) A is true but R is false.
(iv) A is false but R is true.
Option (iii) is correct.