Atmospheric air from 40°C and 60 percent relative humidity

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Atmospheric air from 40°C and 60 percent relative humidity can be brought to 20°C and 60 percent relative humidity by

1. Cooling and dehumidification process
2. Cooling and humidification process
3. Adiabatic saturation process
4. Sensible cooling process

Correct Option: A

Cooling and dehumidification process,