Pick out the correct statement?

Thermodynamics for Chemical 05/08/2020

A. The available energy in an isolated system for all irreversible (real) processes decreases
B. The efficiency of a Carnot engine increases, if the sink temperature is decreased
C. The reversible work for compression in non-flow process under isothermal condition is the
change in Helmholtz free energy
D. All A, B. and C

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