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
Which of the following is not used in delirium - 
Select and explain. 
A. Haloperidol, B. Lithium, C. Diazepam, D. Olanzapine
B: Lithium
Answer: B: Lithium 
Explanation: Drugs used for delirium 
1) Typical antipsychotics : - Haloperidol (DOC), Thioridazine, Chlorpromazine.
2)Atypical antipsyclzotics : - Risperidone, quetiapine, olanzapine.
3) Benzodiazepines (for delirium tremens) : - Chlordiazepoxide, Diazepam, Lorazepam, Clonazepam.