People Who Ruminate Over Problems Tend to Be More Depressed

People who ruminate over problems tend to be more depressed than people who take a different strategy to deal with problems, which indicates that

A) different cognitive styles can be related to depression.
B) men should have higher levels of depression.
C) reproductive hormones should correlate positively with severity of depression.
D) different types and levels of stress experienced by women and men should be the best predictor of depression.