An air conditioner is fixed to a closed room at 30°C where relative humidity is 62.5%. Dew point of the air inside the room is 22 °C. After some time when it was switched on, temperature and the relative humidity decreased to 22 °C and 40% respectively. Then the air conditioner is switched off and allowed to stay for little while and then temperature of air increased to 30 °C. New relative humidity of the room is (1) 62.5%
(2) 50%
(3) 40%
(4) 30%
(5) 25%