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: Anatomy
[{'content': 'All of the following are contraindications to femoral vein phlebotomy, EXCEPT? \nSelect and explain. \nA. Venous occlusive disease of the extremities, B. Loss of sensation, C. Previous surgery of the knee, D. Acquired bleeding disorder', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Contraindications to femoral vein phlebotomy or catheterization are:Previous surgery in the groinProsthetic graft placement in the groinVenous occlusive disease of the extremitiesAcquired or congenital bleeding disorder &Cellulitis or burn over the proposed site of inseion.', 'role': 'assistant'}]