A system undergoes three quasi-static processes sequentially as indicated in the figure. 1-2 is an isobaric process 2-3 is a polytropic process with n = 1.4 and 3-1 is a process in which pV - constant. The following data may be made use of p=p2 = 4bar, p3 = 1bar and V = 1m = P4 bar 1 bar 1m Volume of the system at state point 2 in m is (a) 7.741 (c) 2.173 (b) 6.96 (d) 1.486 The net interaction for the cycle in kJ is (a) 126 (b) 194 (c) 486 (d)-486