7. A gas initially at 0.5-MPa pressure can undergo one of two closed-system processes:

A. adiabatic compression to 2 MPa followed by isothermal expansion to 0.5 MPa

B. isothermal compression to 2 MPa followed by adiabatic expansion to 0.5 MPa

Which gas ends up at the higher entropy? (2 pts)

a. A

b. B

c. Entropy is the same for both gases