"The Incidence of Depression Among College Students Is Negatively Correlated

"The incidence of depression among college students is negatively correlated with the number of sunny days each year in the locale where they attend college." This statement means that:

A) the chances of a college student being depressed tend to increase with fewer sunny days.
B) a student attending college in a locale with very few sunny days will become depressed.
C) the chances of a college student being depressed tend to increase as the number of sunny days increases.
D) a depressed student who moves to a locale with more sunny days will become less depressed.