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: Surgery
[{'content': 'Which of the following enzyme can be added to LA to speed both onset and area of anaesthesia: \nSelect and explain. \nA. Trypsine, B. Alkaline phosphatase, C. Acid phosphatase, D. Hyaluronidase.', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Hyaluronidase is an enzyme that breaks down intracellular cement. It is added to LA to speed both the onset of anesthesia and the area of anesthesia especially in inferior alveolar nerve block.', 'role': 'assistant'}]