This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thorax, Subject name: Anatomy
Pleura extends beyond thoracic cage on all the following except 
Select and explain. 
A. Root of neck, B. Costoveebral angles, C. Right xiphisternal angle, D. Left xiphisternal angle
D: Left xiphisternal angle
Answer: D: Left xiphisternal angle 
Explanation: The pleurae descend below the costal margin at three places, at the right xiphocostal angle, and at the right and left costoveebral angles below the twelfth rib behind the upper poles of the kidneys. The latter fact is of surgical impoance in the exposure of the kidney. The pleura may be damaged at this site.Ref: BD Chaurasia; volume 1; 6th edition