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': 'Methemoglobinemia is a complication following the administration of \nSelect and explain. \nA. Lignocaine, B. Lignocaine, C. Prilocaine, D. Procaine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]