This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ovarian Tumors and Vulvar cancer, Subject name: Gynaecology & Obstetrics
All of the following are known risk factors for the development of ovarian carcinoma EXCEPT: 
Select and explain. 
A. Family History of ovarian carcinoma, B. Use of oral contraceptive pills, C. History of infeility, D. BRCA-1 positive individual
B: Use of oral contraceptive pills
Answer: B: Use of oral contraceptive pills 
Explanation: Oral contraceptive use reduces the risk of epithelial ovarian cancer. Risk factors for ovarian carcinoma * Age--between 45 and 60 years* Nulliparous or of low parity* Woman with history of infeility, previous PCOS, or on tamoxifen* High-calorie, high-fat diet* Genetic predisposition BRCA-1 and BRCA-2 genes* Late menopause* Breast and gastrointestinal cancer* Prolonged H in menopausal woman