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: Dental
[{'content': 'The main cytokine, involved in erythema nodosum leprosum (ENL) reaction is – \nSelect and explain. \nA. Interleulcin – 2, B. Interferon – gamma, C. Tumor necrosis factor – alpha, D. Macrophage colony stimulating factor', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Most important cytokine for Type II lepra reaction (ENL) is tumor necrosis factor (TNF- α).', 'role': 'assistant'}]