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: Pharmacology
[{'content': 'Eutectic lignocaine–prilocaine has the following unique property : \nSelect and explain. \nA. It causes motor blockade without sensory block, B. By surface application, it can anesthetize unbroken skin, C. It is not absorbed after surface application, D. It has strong vasoconstrictor action', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]