Assertion: Two systems, which are in thermal equilibrium with a third system, are in thermal equilibrium with each other.
Reason: The heat flows spontaneously from a system at a higher temp. to a system at a lower temp.
A. If both, Assertion and Reason are true and Reason is the correct explanation of the Asserrion.
B. If both,Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
C. If Assertion is true but the Reason is false.
D. If both, Assertion and Reason are false.
