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
Which of the following is true about X-ray chest: 
Select and explain. 
A. Right hilum is lower than the left hilum, B. Right dome of diaphragm is lower than the left, C. Pulmonary aeries normally extend upto the periphery of the lung field, D. All of the above
A: Right hilum is lower than the left hilum
Answer: A: Right hilum is lower than the left hilum 
Explanation: Ans. Right hilum is lower than the left hilum