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
The indication for ECT is - 
Select and explain. 
A. Delirium tremens, B. Alcohol withdrawal, C. Severe depression, D. Thyrotoxic crisis
C: Severe depression
Answer: C: Severe depression 
Explanation: None