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: Radiology
[{'content': 'All are true about Kerley B line except – \nSelect and explain. \nA. Horizontal, B. Runs from hilar area to peripheral area, C. Due to thickening of septa, D. Due to pulmonary venous hypertension', 'role': 'user'}, {'content': "Answer: B \nExplanation: Kerley's B lines are transverse (Horizontal) lines at lung base. These are due to thickening of interlobar septa due to edema caused by pulmonary venous hypertension (congestion) as occurs in LVF or mitral stenosis.", 'role': 'assistant'}]