This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Applied Aspects and Respiratory Adjustments, Subject name: Physiology
[{'content': 'Spirometry cannot measure - \nSelect and explain. \nA. RV, B. TV, C. IRV, D. ERV', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. is \'a" i.e., RV o Spirometry can measure :- Tidal volume (TV), inspiratory reserve volume (IRV), expiratory\' reserve volume (ERV), vital capacity (VC), forced vital capacity\' (FVC), FEV,.o Spirometry cannot measure :- Residual volume (RV), functional residual capacity (FRC), total lung capacity\' (TLC).', 'role': 'assistant'}]