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': 'The North Kerelia project evaluate risk factors of \nSelect and explain. \nA. Diabetes, B. Cancers, C. Coronary heart disease, D. Obesity', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]