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: Pharmacology
[{'content': 'Mechanism of action of colchicine is: \nSelect and explain. \nA. Suppresses immunity, B. Increased uric acid excretion, C. Decreased uric acid synthesis, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Suppresses immunity', 'role': 'assistant'}]