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: Surgery
[{'content': 'Compression therapy for varicose veins results in all except \nSelect and explain. \nA. Diverts blood towards deep veins, B. Prevents outward flow of blood in perforating veins, C. Decreases venous elasticity, D. Improves efficacy of calf muscle pump', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Compression therapy improves venous elasticity.', 'role': 'assistant'}]