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: Pharmacology
Drug specifically used for depressive phase of bipolar disorder is - 
Select and explain. 
A. Carbamazepine, B. Valproate, C. Lithium, D. Lamotrigine
D: Lamotrigine
Answer: D: Lamotrigine 
Explanation: Ans. is 'd' i.e., Lamotrigine o Lamotrigine is the first anticonvulsant to be of benefit in bipolar depression