A stationary mass of gas is compressed without friction from an initial state of 0.3 m3 and 0.105 MPa to a final state of 0.15 m3 and 0.105 MPa, the pressure remaining constant during the process. There is a transfer of 37.6 kJ of heat from the gas during the process. The internal energy of the gas changes by

• A. -21.85 kJ
• B. 3.85 kJ
• C. -37.6 kJ
• D. -15.75 kJ