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': 'The period of normalcy is seen between two psychotic episodes. The diagnosis is \nSelect and explain. \nA. Schizophrenia, B. Manic depressive psychosis (MDP), C. Alcoholism, D. Depression', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Bipolar mood 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, Niraj Ahuja,7th edition, pg no73)', 'role': 'assistant'}]