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
Suicidal tendencies are most common in -a) Involutional depressionb) Reactive depressionc) Psychotic depressiond) Childhood depression 
Select and explain. 
A. a, B. ac, C. ad, D. b
B: ac
Answer: B: ac 
Explanation: Suicide is common in :- Endogenous depression, psychotic depression, involutional (old age) depression.