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': 'Which of the following is false about fibroid : \nSelect and explain. \nA. Usually malignant, B. Rare before 20 years, C. Usually asymptomatic, D. More common in nulliparous', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Usually malignant', 'role': 'assistant'}]