When a system is take form state A to state C to state B along the path A-C-B, 180 Kj of the heat flows into the system and it does 130 Kj of work (as shown in the figure below):
How much heat will flow into the system along the path A-D-B if the work done by it along the path is 40 kJ?
(a) 40kJ (b) 60kJ
(c) 90kJ (d) 135 kJ