Which statement(s) is(are) invalid? (A) Processes can occur in a certain direction only, not in any direction. A process must proceed in the direction that complies with the increase of

entropy principle. ) Entropy is a conserved property, and there exists a conservation of entropy principle. Entropy generation (Sgen) is a measure of the magnitudes of the irreversibilities during a process. Entropy may be transferred by heat transfer and mass transfer. None of the above.