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: Unknown
Difference between Delirium and Dementia: 
Select and explain. 
A. Fluctuating course, B. Hypoactive psychomotor activity, C. Difficulty in finding words, D. Poor Memory
C: Difficulty in finding words
Answer: C: Difficulty in finding words 
Explanation: Ref. Oxford textbook of Psychiatry. Page. 358