This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Demography and family planning, Subject name: Social & Preventive Medicine
[{'content': 'Combined oral pills protect the woman against all except \nSelect and explain. \nA. Menorrhagia, B. Benign breast disease, C. Pelvic inflammatory disease, D. Venous thromboembolism', 'role': 'user'}, {'content': 'Answer: D \nExplanation: OC pills are found to protect against: Benign breast disorder Ovarian cyst PID Ectopic pregnancy Ovarian cancer Side effect of pills is Venous thrombosis with or without pulmonary embolus. Reference : Park&;s textbook of preventive and social medicine, 23rd edition, Page no: 502', 'role': 'assistant'}]