This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Intravenous Anesthetic Agents, Subject name: Anaesthesia
All are features of emergence delirium with ketamine anesthesia except:- 
Select and explain. 
A. Visual illusions, B. Coical blindness, C. No hallucination, D. Auditory, proprioceptive and confusional illusions
C: No hallucination
Answer: C: No hallucination 
Explanation: Despite its reputation as a hallucinogen, sub-anesthetic ketamine does not consistently produce frank hallucinations. 5 - 30 % patients receiving intravenous ketamine has incidence of postoperative delirium and hallucination associated with it. prevention and treatment - intravenous midazolam