This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mood disorders, Subject name: Psychiatry
[{'content': 'What is affected in bipolar disorder \nSelect and explain. \nA. Emotions, B. Perception, C. Personality, D. Thought', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Bipolar disorder earlier known as manic-depressive psychosis is characterised by recurrent episodes of mania and depression in the same patient at different times. These episodes can occur in any sequence. (Ref: a sho textbook of psychiatry, NirajAhujaa, 7th edition, pg no.73)', 'role': 'assistant'}]