This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Basics of Psychiatry, Subject name: Psychiatry
Delusions can be seen in all of the following except: 
Select and explain. 
A. OCD, B. Depression, C. Mania, D. Schizophrenia
A: OCD
Answer: A: OCD 
Explanation: Delusion can be seen in schizophrenia, mania, depression as well as OCD. However the best answer here would be OCD, as delusions are not so common in patients with Obsessive Compulsive Disorder.