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': 'Most common complication of central venous catheter \nSelect and explain. \nA. Local bleeding, B. Thrombosis, C. Catheter related infection, D. Pneumotherax', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Catheter related infection', 'role': 'assistant'}]