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
False about delusional disorder 
Select and explain. 
A. Delusion is a disorder of thought content, B. Patient has a false belief, C. Delusion of persecution is the most common, D. Hallucination is present
D: Hallucination is present
Answer: D: Hallucination is present 
Explanation: Delusional disorders are characterized by development of single or set of delusions and absence of hallucination, illusion and disorganised behaviour.