Which of the following statements is true?
A. It takes far less water vapor to saturate the air in a city with a low air temperature compared to a city with a high air temperature.
B. the saturation vapor pressure is related to the dew point temperature
C. the higher the vapor pressure the lower the amount of moisture in the air.
D. As the air temperature decreases, the relative humidity decreases if you hold the amount of water vapor in the air constant.