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: Radiology
[{'content': "The EEG cabins should be completely shielded by a continuous sheet of wire mesh of copper to avoid the picking up of noise from external electromagnetic disturbances. Such a shielding is called as: \nSelect and explain. \nA. Maxwell cage, B. Faraday cage, C. Edison's cage, D. Ohms cage", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Faraday cage', 'role': 'assistant'}]