A highly agitated client paces the unit and states, "I could buy this whole hospital." The client's mood fluctuates from fits of laughter to outbursts of anger. Which is the most accurate documentation of this client's behavior?

"Mood labile. Exhibiting delusions of reference. Hyperactive."

"Mood labile. Exhibiting grandiosity. Agitated and pacing."

"Rates mood 8/10. Exhibiting looseness of association. Euphoric."

"Mood euthymic. Exhibiting magical thinking. Restless."