This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pharmacology
[{'content': 'Oral contraceptive pill is useful in preventing all the following except \nSelect and explain. \nA. Carcinoma breast, B. Carcinoma ovary, C. Pelvic inflammatory disease, D. Anaemia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Health benefits of oral contraceptive pill: lower the risk of endometrial and ovarian carcinoma, reduced menstrual blood loss thus anemia and reduces endometriosis and pelvic inflammatory disease. It causes an increased incidence of breast cancer Ref.Essentials of medical pharmacology TD Tripathi 7th edition page no.326', 'role': 'assistant'}]