複選題18. Consider the entropy of an ideal gas system, which ones of the following processes result in the increase of its entropy?(A) Quasi-static isothermal expansion from volume V to volume 2V.(B) Quasi-static isothermal compression from e V to volume (1/2)V.(C) Adiabatic free expansion from volume V to volume 2V.(D) Quasi-static adiabatic expansion from volume V to volume 2V.(E) Quasi-static adiabatic compression from volume V to volume (1/2)V.