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': 'The most essential fatty acid is \nSelect and explain. \nA. Linoleic acid, B. Linolenic acid, C. Arachidonic acid, D. Palmitic acid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Linoleic acid\xa0\n\nLinoleic acid is the most important essential fatty acid because it serves as a basis for the production of other EFA like arachidonic acid.', 'role': 'assistant'}]