This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Organic Mental Disorder, Subject name: Psychiatry
Which of the following present with loss of conciousness: 
Select and explain. 
A. Schizophrenia, B. Dementia, C. Mania, D. Organic brain syndrome
D: Organic brain syndrome
Answer: D: Organic brain syndrome 
Explanation: Ans. (d) Organic brain syndrome