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
The percentage of myomas undergoing malignant transformation : 
Select and explain. 
A. 10%, B. 5%, C. 1%, D. 0.50%
D: 0.50%
Answer: D: 0.50% 
Explanation: 0.50%