This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Organic Mental Disorders, Subject name: Psychiatry
Disorientation occurs in: 
Select and explain. 
A. Schizophrenia, B. Organic brain syndrome, C. Depression, D. Mania
B: Organic brain syndrome
Answer: B: Organic brain syndrome 
Explanation: Presence of disturbances of consciousness and disorientation is suggestive of organic mental disorders.