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
[{'content': 'Which one of the following hormonal contraceptive CANNOT be used during lactation : \nSelect and explain. \nA. Mini - pill, B. Norplant, C. DMPA, D. Combined oral contraceptive pills', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Combined oral contraceptive pills', 'role': 'assistant'}]