Tina Has Been Hyperactive for the Past Week, Buying Things

Tina has been hyperactive for the past week, buying things she can't afford and painting dozens of pictures. Her thoughts seem to be racing out of control and she is convinced that she is going to be the next Jackson Pollock, even though she has never painted before this week. She has also started a major renovation project at home, and since she's hardly sleeping, she's keeping her neighbours awake with all her pounding and sawing. Tina's symptoms suggest that she

A) has dysthymia.
B) is currently experiencing a manic episode.
C) is developing a somatic disorder.
D) has a personality disorder.
E) is currently experiencing a depressive episode.