This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Forensic Psychiatry, Subject name: Forensic Medicine
True about delusions is all except: 
Select and explain. 
A. They are false belief, but firm., B. It is primarily a disorder of perception, C. Not associated with intellectual background, D. It remains despite of contrary evidence
B: It is primarily a disorder of perception
Answer: B: It is primarily a disorder of perception 
Explanation: DELUSION: Delusion is a false belief in something which is not a fact It persists even after its falsity has been clearly demonstrated. A normal person can have a delusion, but is capable of correcting it by his reasoning power, by his past experience and by being convinced by others. It is primarily a disorder of thought