(1h). (2.5p) Please circle the valid statements associated with adiabatic process, reversible process, andisentropic process of a closed system. (a) A reversible, adiabatic process is an isentropic process. (b) The

entropy generation of a reversible process is zero. (c) The entropy is constant for an isentropic process. (d) For an adiabatic system, the entropy of the system cannot decrease_for both closed and controlvolume systems. (e) All above.