One member of a therapy group had been quiet for the first several

sessions. The member revealed to the other members feeling of depression and emptiness. This week, the member was full of energy and talking very quickly. The member became irritated with another member tried to interrupt, started yelling, and then broke into a fit of laughter. Based on the situation, what can the PMHNP determine about the member?
A. The member is simply having a bad day.
B. The member is exhibiting bipolar behaviors.
C. The member is a habitual monopolist.
D. The member has narcissistic tendencies.