In Which of the Following Places Would You Expect to Find

In which of the following places would you expect to find the highest incidence of seasonal affective disorder?

A) in a city close to the equator where the heat and humidity are oppressive
B) in a city where there is a lack of rainfall or other forms of precipitation
C) in a city far from the equator where there is little daylight in the winter
D) in a city where there is very little variability in temperature across the seasons