This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
Best use of lithium is in - 
Select and explain. 
A. Treatment of schizophrenia, B. Treatment of recurrent depression, C. Treatment of first depressive episode, D. Prophylaxis of bipolar mood disorder
D: Prophylaxis of bipolar mood disorder
Answer: D: Prophylaxis of bipolar mood disorder 
Explanation: None