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
A housewife presented with acute paronychia since two days. The BEST anaesthetic agent for acute paronychia is: 
Select and explain. 
A. 1% xylocaine, B. 2% xylocaine, C. Ketamine, D. Xylocaine + adrenaline
D: Xylocaine + adrenaline
Answer: D: Xylocaine + adrenaline 
Explanation: The addition of epinephrine along with anaesthetic agent causes vasoconstriction at the site of administration. The consequent decreased absorption increases neuronal uptake, enhances the quality of analgesia, prolongs the duration of action, and limits toxic side effects. The effects of vasoconstrictors are more pronounced with shoer-acting agents. For example, the addition of epinephrine to lidocaine usually extends the duration of anesthesia by at least 50%. Epinephrine can also augment and prolong analgesia through activation of 2-adrenergic receptors. Ref: Morgan, Jr. G.E., Mikhail M.S., Murray M.J. (2006). Chapter 14. Local Anesthetics. In G.E. Morgan, Jr., M.S. Mikhail, M.J. Murray (Eds), Clinical Anesthesiology, 4e.