A system of 100 kg mass undergoes a process in which its specific entropy increases from 0.30 kJ/kg K to 0.35 kJ/kg K. At the same time the entropy of the surroundings decreases from 80kJ/K to 75 kJ/K. What is the type of the process/
(a) Reversible (b) Irreversible
(c) Impossible (d) Not identifiable with the data given