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
Indications of ECT is/are -a) Psychotic depressionb) Catatonic schizophreniac) Cyclothymiad) Dysthymiae) Post traumatic stress disorder 
Select and explain. 
A. ac, B. ab, C. ad, D. bc
B: ab
Answer: B: ab 
Explanation: Severe depression with psychotic features (psychotic depression) and catatonic schizophrenia are indications for ECT.