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: Social & Preventive Medicine
[{'content': 'Most important Essential Fatty Acid is \nSelect and explain. \nA. Linoleic Acid, B. Linolenic Acid, C. Arachidonic Acid, D. Eicosapentanoic Acid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Essential Fatty Acids (EFA): Are those that cannot be synthesized in human body; they can only be derived from the\xa0food\nThe most important EFA is Linoleic Acid, which serves as a basis for production of other EFA\n\nDietary sources of EFA:', 'role': 'assistant'}]