Lila Recovered from an Episode of Depression About Four Months

Lila recovered from an episode of depression about four months ago. Now, however, she is beginning to feel incredibly energetic, elated, and hyperactive. She finds she has very little need for sleep. Her friends are starting to get worried because she has been talking repeatedly about taking her life savings and investing it into an unknown company. Lila may likely meet the criteria for _____

A) schizophrenia.
B) panic disorder.
C) an anxiety disorder.
D) bipolar disorder.