Linda is a college student who has periods of time when she has no pleasure for things that she normally enjoys leg. baking, going out with friends, etc.), however, she also has times when she is much more elated, self-confident, and starts going out with a lot of new people that she doesn't know very well. When feeling more elated. Linda is also more impulsive and engages in more risky behaviors leg, being sexually active with many partners in a short period of time without using protection). Linda would most likely be diagnosed with:
A. major depression
B. conduct disorder
C. bipolar disorder
D. histrionic personality disorder