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': 'Which among the following is a cardio-protective fatty acid? \nSelect and explain. \nA. Palmitic acid, B. Stearic acid, C. Omega-3 fatty acids, D. Oleic acid', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Omega-3 fatty acids reduce the incidence of CHD.', 'role': 'assistant'}]