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: Biochemistry
[{'content': 'True statement about fatty acid: \nSelect and explain. \nA. Polyunsaturated FA is essential for membrane structure, B. Biologically arachidonic acid is essential to life, C. Hydrogenated vegetable oils contains Trans fatty acid, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: C, B, > A i.e. (Hydrogenated vegetable oils contains Trans fatty acid; Biologically arachidonic acid is essential to life >Polyunsaturated FA is essential for membrane structure)', 'role': 'assistant'}]