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: Anatomy
Length of trachea - 
Select and explain. 
A. 10-12 cm, B. 1 cm -10 cm, C. 15 cm, D. 22.5 cm
A: 10-12 cm
Answer: A: 10-12 cm 
Explanation: Trachea is around 10-15cms.