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: Forensic Medicine
Nihilistic ideas are seen in: PGI 08 
Select and explain. 
A. Depression, B. Schizophrenia, C. OCD, D. Anxiety disorders
A: Depression
Answer: A: Depression 
Explanation: Ans. Depression