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 risk of complex hyperplasia of endometrium with atypia progressing to malignancy in a postmenopausal woman is: 
Select and explain. 
A. 3%, B. 8%, C. 15%, D. 28%
D: 28%
Answer: D: 28% 
Explanation: None