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: ENT
[{'content': 'Canal of Huguier is present in which wall of the middle Ear \nSelect and explain. \nA. Anterior wall, B. Medial wall, C. Lateral wall, D. Posterior wall', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]