The maximum amount of work that could be utilized from the above process is

Question

A gas expands in a frictionless piston-cylinder arrangements. The expansion process is very slow, and is resisted by an ambient pressure of 100kPa. During the expansion process, the pressure of the system (gas) remains constant at 300 kPa. The change in volume of the gas is 0.01m³. The maximum amount of work that could be utilized from the above process is                                                                                                              

      (a) 0 kJ                                                               (b) 1 kJ

      (c) 2 kJ                                                               (d) 3 kJ