The data listed below are claimed for power cycles operating between hot and cold reservoirs at 1000 K and 400 K, respectively. For each case determine whether such a cycle is in keeping with the first and second laws of thermodynamics. (a) QH 5 300 kJ, Wcycle 5 160 kJ, QC 5 140 kJ. (b) QH 5 300 kJ, Wcycle 5 180 kJ, QC 5 120 kJ. (c) QH 5 300 kJ, Wcycle 5 170 kJ, QC 5 140 kJ. (d) QH 5 300 kJ, Wcycle 5 200 kJ, QC 5 100 kJ