Air is cooled and dehumidified as it flows over the coils of a refrigeration system at 100 kPa from 30°C and a humidity ratio of 0.023 kg/kg dry air to 15°C and a humidity ratio of 0.015 kg/kg dry air. If the mass flow rate of dry air is 0.4 kg/s, the rate of heat removal from the air is

(a) 6 kJ/s

(b) 8 kJ/s

(c) 11 kJ/s

(d) 14 kJ/s

(e) 16 kJ/s