The mean surface temperature of water is 4°C, the dry bulb temperature of air is 20°C, wet bulb temperature of air is 15°C and dew point temperature is 10°C. The process is called as……………………….. (A)Heating and humidification (B) Humidification (C) Cooling and humidification (D) Adiabatic saturation (E) Cooling (F) Cooling and dehumidification