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
A psychotic disorder most commonly pertains to which of the following symptoms ? 
Select and explain. 
A. Weeping or laughing, B. Agitation or retardation, C. Obsessions or compulsions, D. Delusions or hallucinations
D: Delusions or hallucinations
Answer: D: Delusions or hallucinations 
Explanation: None