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: Gynaecology & Obstetrics
[{'content': 'Histological features of leiomyoma are all except \nSelect and explain. \nA. Well-circumscribed tumor, B. Less cellular than surrounding, C. Cells arranged in interlacing fascicles at right angles, D. Splindle shaped smooth muscle cells with eosinophilic cytoplasm', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Fibroids\xa0 are usually more cellular than surrounding myometrium.', 'role': 'assistant'}]