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: Radiology
Tracheal bifurcation on X-ray corresponds to 
Select and explain. 
A. T5T6, B. T4T5, C. Sternal angle, D. All
D: All
Answer: D: All 
Explanation: A i.e. T5T6; B i.e. T4 T5; C i.e. Sternal angle