This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Brief Psychotic Disorder and Catatonia, Subject name: Psychiatry
Which of the following suggest a psychotic rather than an organic disorder? 
Select and explain. 
A. Confusion, B. Complex delusions, C. Impairement of consciousness, D. Lack of insight
D: Lack of insight
Answer: D: Lack of insight 
Explanation: ANSWER: (D) Lack of insightREF: Kaplan 9th ed p. 334Presenting symptoms of organic mental illnesses:Visual or auditory hallucinationComplex delusionsSoft neurological signsLoss of consciousnessMisidentificationHistory of head injuryConcurrent medical/neurological historyLack of insight is never seen in organic mental disease