This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Management In Orthopedics, Subject name: Orthopaedics
[{'content': 'Unna boot is used for treatment of - \nSelect and explain. \nA. Diabetic foot ulcer, B. Varicose ulcers, C. Ankle instability, D. Calcaneum fracture', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e.,Varicose ulcers Unna Boot* It is named for the dermatologist Paul Gerson Unna.* This boot can be used to treat uninfected nonnecrotic leg and foot ulcers that result from such conditions as venous insufficiency (varicose ulcers) and stasis dermatitis.", 'role': 'assistant'}]