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
Non contraceptive use of OCPs are all except: 
Select and explain. 
A. Ca endometrium, B. Ca breast, C. Rheumatoid arthritis, D. Endometriosis
B: Ca breast
Answer: B: Ca breast 
Explanation: None