This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lipids, Subject name: Biochemistry
[{'content': 'Which fatty acid is found exclusively in breast milk: \nSelect and explain. \nA. Linoleic Acid, B. Linolenic Acid, C. Palmitic Acid, D. Docosahexaenoic Acid', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D. Docosahexaenoic AcidDocosahexaenoic acid (DHA) is synthesized from a-linolenic acid and can be directly obtained from fish oils. It is present in high concentration in retina, cerebral cortex, testis and sperm. DHA is needed for the development of brain and retina and is supplied via breast milk and placenta.', 'role': 'assistant'}]