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: Dental
[{'content': 'The highest percentages of polyunsaturated fatty acids are present in \nSelect and explain. \nA. Groundnut oil, B. Soyabean oil, C. Margarine, D. Palm oil', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]