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
[{'content': 'Maximum safe dose of lignocaine with adrenaline is: \nSelect and explain. \nA. 3 mg/kg wt., B. 7 mg/kg wt, C. 10 mg/kg wt., D. 15 mg/kg wt', 'role': 'user'}, {'content': 'Answer: B \nExplanation: 7 mg/kg wt', 'role': 'assistant'}]