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
Intermenstrual bleeding is frequent side effect seen with 
Select and explain. 
A. Progestin-only pills during early months of use., B. Combined OCPs throughout use., C. Progestin-only pills resultant AUB never occurs., D. Combined OCPs during early months of use.
D: Combined OCPs during early months of use.
Answer: D: Combined OCPs during early months of use. 
Explanation: Intermenstrual bleeding is frequent with progestin - only pills throughout use and with combined OCPs during early months of use.