This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anaesthesia
Which of the following drugs is contraindicated in a patient with raised intracranial pressure? 
Select and explain. 
A. Thiopentone, B. Propofol, C. Midazolam, D. Ketamine
D: Ketamine
Answer: D: Ketamine 
Explanation: Cerebral blood flow, metabolism, oxygen consumption and ICT all are increased by ketamine - ketamine is contraindicated in raised ICT.(Refer: stoelting's pharmacology and physiology in anaesthetic practice, 5th edition, pg no.186-193)