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
Tidal volume in ml 
Select and explain. 
A. 300, B. 400, C. 900, D. None
D: None
Answer: D: None 
Explanation: Tidal volume is 500 ml Tidal volume (symbol VT or TV) is the lung volumerepresenting the normal volume of air displaced between normal inhalation and exhalation when extra effo is not applied. In a healthy, young human adult, tidal volume is approximately 500 mL per inspiration or 7 mL/kg of body mass. Ref: Guyton and Hall textbook of medical physiology 12th edition,page number:324,325