This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Orthopaedics
[{'content': 'The frozen pelvis is seen in \nSelect and explain. \nA. Osteoahritis, B. Potts disease, C. Actinomycosis, D. Reiters disease', 'role': 'user'}, {'content': "Answer: B \nExplanation: A term for significant involvement of the pelvic floor by malignancy, usually carcinoma, or tuberculosis; in which there is a massive extension of pathology to the urinary bladder, female genital tract, and sigmoid colon. Adequate resection of a frozen pelvis is viually impossible; chemotherapy and radiation therapy are palliatives at best(Refer: Mohindra's Fundamentals of Ohopedics, 2nd edition, pg no. 300)", 'role': 'assistant'}]