Answer:
Option (B) increases only
Explanation:
An isolated system, in thermodynamics is defined as the system which does not allow the exchange of both the energy and mass in between the system and the surrounding.
In any practical thermodynamic process, the entropy of an isolated system increases only as the system can neither exchange energy nor mass but can generate the randomness in the molecules inside the system thus increasing its entropy up to the equilibrium point at which it reaches its maximum point.
