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: Anaesthesia
[{'content': "True about Wright's Spirometer is/are \nSelect and explain. \nA. Flow rates can be calculated, B. Gives false high values at low flow rates, C. Gives false low values at high flow rates, D. All", 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Flow rates can be calculated', 'role': 'assistant'}]