Ana Is 17 Years Old and Experiencing a Persistent Elevated

Ana is 17 years old and experiencing a persistent elevated mood. She feels like her thoughts are racing. Ana reports that she needs less sleep than she did before. She has been buying an extensive new wardrobe and has been involved in sexual relations with several older men. She is doing poorly in school and is in conflict with her family and friends. Ana would most likely be diagnosed, according to DSM-IV, as experiencing a

A) major depressive episode.
B) manic episode.
C) dysthymic episode.
D) masked depressive episode.