Answer question 16)-19) by choosing from the following answers: (A) Constant volume process (B) Isothermal process (C) Constant pressure process (D) Adiabatic process For a specific amount ideal gas to evolve quasi-statically from state A (thermal variable PAVATA) to state B(PB,VBTB), what kind of process involved for the following cases? 16) TBPB=TAPA 17) T8VB=TAVA 18) PAVAY=PBVBY, where Y=CvCp 19) PAVA=PBVB