A volume of air at constant barometric pressure may be brought to dew point by
(A) Increasing the temperature
(B) Decreasing the temperature
(C) Neither (a) nor (b)
(D) Both (a) and (b)
(A) Increasing the temperature
(B) Decreasing the temperature
(C) Neither (a) nor (b)
(D) Both (a) and (b)