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: Anaesthesia
Seen after tracheostomy 
Select and explain. 
A. Inversion of V/P ratio, B. Increased V/P ratio, C. Decreased in dead space, D. Increased resistance of air flow
C: Decreased in dead space
Answer: C: Decreased in dead space 
Explanation: Tracheostomy decreases all three :- V/P ratio, dead space, resistance to air flow.