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
[{'content': 'A chest x ray with arrows showing Hilar vascular markings, Kerly B lines, Hazy Lt. Lung field. Diagnosis is \nSelect and explain. \nA. Mild congestive heart failure, B. Pleural effusion, C. Bronchiectasis, D. Emphysema', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (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.', 'role': 'assistant'}]