A Quantity of an Ideal Gas Is Compressed to Half

Multiple Choice

A quantity of an ideal gas is compressed to half its initial volume.The process may be adiabatic, isothermal or occurring at constant pressure.Rank those three processes in order of the work required of an external agent, least to greatest.

A) adiabatic, isothermal, constant pressure
B) adiabatic, constant pressure, isothermal
C) isothermal, adiabatic, constant pressure
D) constant pressure, adiabatic, isothermal
E) constant pressure, isothermal, adiabatic