The work interaction during the return process (in kN-m) would be

Question

A control mass undergoes a process form state 1 to state 2 as shown in the figure below. During this process, the heat transfer to the system is 200 Kj. if the control mass returned adiabatically from state 2 to state 1 by another process, then the work interaction during the return process (in kN-m) would be

(a)-400                         (b)-200

(c) 200                         (d) 400