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
All are the risk factors for endometrial carcinoma except 
Select and explain. 
A. Multiparity, B. Obesity, C. Early menarche, D. Unopposed estrogen therapy
A: Multiparity
Answer: A: Multiparity 
Explanation: Pathology behind endometrial cancer is unopposed estrogen exposure to endometrium
Multiparity is a protective factor
Risk factors for endometrial cancer

Early menarche and Late menopause
Obesity
PCOS
Nulliparity
Infertility
Medical comorbidities like Diabeties, Hypertension
Tamoxifen usage