Air washers used in air conditioning systems achieve simultaneous heating and humidification by:
a. Cooling the entering air below its dry bulb temperature
b. Cooling the spray water to a temperature below the dry bulb temperature
c. Heating the spray water to a temperature above the dry bulb temperature of the entering air
d. Cooling the spray water to a temperature below the dew point of the entering air
e. Heating the entering air above its dry bulb temperature
Answer: C