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
A 42 year old female patient has abnormal uterine bleeding with mild atypical hyperplasia of endometrium. The treatment of choice is : 
Select and explain. 
A. Oral contraceptive pills, B. Progesterone, C. Total hysterectomy, D. Oestrogens
C: Total hysterectomy
Answer: C: Total hysterectomy 
Explanation: Total hysterectomy