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: Physiology
[{'content': 'Isocapnic exercise is ? \nSelect and explain. \nA. Breathing for sho duration against resistance, B. Breathing of decreased volume of ventilation, C. Breathing of increased volume of ventilation for long period, D. Breathing of decreased volume for long period', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Breathing of increased volume of ventilation for long period", 'role': 'assistant'}]