Assertion : The presence of reactants in a closed vessel made of conducting material is an example of a closed system.
Reason : In a closed system, there is no exchange of matter but exchange of energy is possible between the system and the surroundings.
A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false.
D. If both assertion and reason are false.