Assertion: In the process PT=constant, if the temperature of a gas is increased, the work done by the gas is positive. Reason: For the given process, V∝T.
(1) If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
(2) If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
(3) If Assertion is true, but Reason is false.
(4) If Assertion is false but Reason is true.