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
ECT is not useful in treatment of 
Select and explain. 
A. Chronic Schizophrenia, B. Catatonic Schizophrenia, C. Endogenous depression, D. Acute psychosis
A: Chronic Schizophrenia
Answer: A: Chronic Schizophrenia 
Explanation: A i.e. Chronic schizophrenia