Water at 420C is sprayed into stream of air at atmospheric pressure, dry bulb temperature of 400C and a wet bulb temperature of 200C. The air leaving the spray humidifier is not saturated. Which of the following statements is true?
(a) Air gets cooled and humidified
(b) Air gets heated and humidified
(c) Air gets heated and dehumidified
(d) Air gets cooled and dehumidified