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
Posterior to sternum is 
Select and explain. 
A. Left atrium, B. Left ventricle, C. Right atrium, D. Right ventricle
D: Right ventricle
Answer: D: Right ventricle 
Explanation: Posterior to sternum is right ventricle . Ref - medscape.com