This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Dementia Due to Metabolic Causes, Subject name: Psychiatry
Delirium & dementia can be differentiated by? 
Select and explain. 
A. Loss of memory, B. Apraxia, C. Delusion, D. Altered sensorium
D: Altered sensorium
Answer: D: Altered sensorium 
Explanation: ANSWER: (D) Altered sensoriumREF: Kaplan & Sadock's Synopsis of Psychiatry 10th ed chapter-10Repeat Psychiatry 2013 Session 1, June 2010