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
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: Ans. is 'd' i.e., Right ventricleNormally, most of the anterior poion of right ventricle is in contact with sternum.It is for this reason that sternal and parasternal injury commonly results in right vantricular injury.