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 one of the following is NOT an absolute contraindication for oral contraceptive pills? \nSelect and explain. \nA. Cancer of breasts, B. Cardiac abnormalities, C. History of thrombo-embolism, D. Nursing mothers', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Contraindications for use of oral contraceptive pills (OCPs):', 'role': 'assistant'}]