This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory System, Subject name: Radiology
Not true regarding Pectus excavatum? 
Select and explain. 
A. Heart shifted towards left side, B. Features may suggest RML consolidation, C. Anterior ribs are more vertically oriented - 7 shaped ribs, D. Heart shifted towards right side.
D: Heart shifted towards right side.
Answer: D: Heart shifted towards right side. 
Explanation: Ans DIn pectus excavatum the heart is shifted towards left side. As right heart border goes behind the sternum it is obscured and can thus mimic right middle lobe disease.