This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urology, Subject name: Surgery
[{'content': 'Which one of the following soft tissue sarcomas frequently metastasizes to lymph nodes \nSelect and explain. \nA. Fibrosarcoma, B. Osteosarcoma, C. Embryonal Rhabdomysarcoma, D. Alveolar soft pa sarcoma', 'role': 'user'}, {'content': "Answer: C \nExplanation: The types of sarcoma with the highest incidence of lymph node metastasis are angiosarcoma, embryonal rhabdomyosarcoma, and epithelioid sarcoma. Other sarcomas which also spread to lymph nodes are synol sarcoma, Ewing's sarcoma, lymphangiosarcoma, carcinosarcoma of uterus. Reference : page 311 SRB's manual of surgery 5th edition", 'role': 'assistant'}]