This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Physiology
By spirometry, one can measure 
Select and explain. 
A. Residual volume, B. FRC, C. TLC, D. Tidal volume
D: Tidal volume
Answer: D: Tidal volume 
Explanation: Most lung volumes are measured by Spirometer. Residual volume, total lung capacity, and functional residual capacity cannot be measured with a spirometer.Ref: Ganong review of medical physiology 23rd edition Page no: 593