This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Female genital Tract, Subject name: Pathology
[{'content': 'Most common type of rhabdomyosarcoma is? \nSelect and explain. \nA. Pleomorphic, B. Embryonal, C. Alveolar, D. Botryoid', 'role': 'user'}, {'content': 'Answer: B \nExplanation: MC sarcoma in infancy or childhood is embryonal rhabdomyosarcoma. In some cases, it manifests as a polypoid grapelike mass (sarcoma botryoides). MC sarcoma in the bladder in adults is leiomyosarcoma', 'role': 'assistant'}]