This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
[{'content': 'Red line in pure tone audiometry is for \nSelect and explain. \nA. Bone conduction, B. Air conduction, C. Right ear, D. Left ear', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Red line: Right ear Blue line: Left ear Continuous line: Air Conduction Dotted line: Bone conduction Ref: Dhingra; 6th Edition; pg no 30', 'role': 'assistant'}]