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
All of the following pa of the treatment of Li toxicity, except: 
Select and explain. 
A. Treating dehydration, B. Ingestion of polystyrene, C. Hemodialysis, D. Using an antagonist
D: Using an antagonist
Answer: D: Using an antagonist 
Explanation: No antidote has been described for treatment of lithium toxicity. Ref: Meyler's Side Effects of Psychiatric Drugs By Jeffrey K. Aronson, 2008, Page 125; Kaplan and Sadock's Psychiatry, 9th Edition, Page, 1071.