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
Drug used to prolong action of LA in Hypeensive pts? 
Select and explain. 
A. Clonidine, B. Felypressin, C. Dexmeditomidate, D. Noradrenalin
B: Felypressin
Answer: B: Felypressin 
Explanation: Ans. is 'b'.e., Felypressin