This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Radiology
A chest x ray with arrows showing Hilar vascular markings, Kerly B lines, Hazy Lt. Lung field. Diagnosis is 
Select and explain. 
A. Mild congestive heart failure, B. Pleural effusion, C. Bronchiectasis, D. Emphysema
A: Mild congestive heart failure
Answer: A: Mild congestive heart failure 
Explanation: (A) Mild congestive heart failure # Bronchovasular markings made by blood vessels supplyiung nutrients to bronchi and bronchioles in lungs seen in pulmonary or respiratory infections.> Kerly B lines represent interlobular septa present at lung bases on x ray seen in pulmonary oedema, lymphangitis, maligant lymphoma, viral and fungal pneumonia, pulmonary fibrosis.