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
Tidal volume in adult is: 
Select and explain. 
A. 125 ml, B. 500 ml, C. 1500 ml, D. 2200 ml
B: 500 ml
Answer: B: 500 ml 
Explanation: The amount of air breathed in and out of lungs in a single quiet respiration is called Tidal volume. The normal value is 500 ml.