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: Social & Preventive Medicine
[{'content': 'Which of the following is/are benefits of combined OCPs use ?a) Hepatocellular adenomab) PIDc) Ovarian cystsd) Fibrocystic disease of breaste) Ectopic pregnancy \nSelect and explain. \nA. bce, B. abd, C. bcde, D. acde', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]