​The following question refers to the temperature and dew point data in the following cities. City​Air Temperature (o F)​Dew Point (oF)
City A​95​ 76
City B​10​ 10
City C​30​ 21
City D​50​ 42

Which city has the highest saturation vapor pressure?
​a. City A
b. City B
c. City C
d. City D