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: Anaesthesia
Which of the following anaesthetic agent does not cause hypotension on injection ? 
Select and explain. 
A. Ketamine, B. Propofol, C. Halothane, D. Thiopentone
A: Ketamine
Answer: A: Ketamine 
Explanation: Ketamine causes increase in BP.