This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Interstitial Lung Disease, Subject name: Medicine
The chest CXR of patient shows? 
Select and explain. 
A. Emphysema, B. Reticular shadows, C. Batwing edema, D. Kerley B lines
B: Reticular shadows
Answer: B: Reticular shadows 
Explanation: CXR shows the presence of reticular nodular shadows in both lung fields. Choice A is ruled out since emphysema shows hyperinflation with flattening of the diaphragm. Choice C and D are associated with increased CT ratio and cardiac borders can be ruled out. Hence answer by exclusion is choice B