Please Answer the Following Questions Using the Data Below

Multiple Choice

Please answer the following questions using the data below:
H₂O vapor content: 14 grams
H₂O vapor capacity: 20 grams at 25 degrees Celsius
14 grams at 20°C 10 grams at 15°C
-At 25°C it takes 20 grams of water vapor to saturate 1 kilogram of dry air. If there are 5 grams of water vapor in 1 km of air at that temperature, what is the relative humidity?

A) 100%
B) 10%
C) 25%
D) 75%
E) 50%