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': 'Commonest degenerative changes observed in uterine myoma is : \nSelect and explain. \nA. Red degeneration, B. Hyaline degeneration, C. Malignant change, D. Haemorrhage', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Hyaline degeneration', 'role': 'assistant'}]