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': 'Contraceptive which is supplied by government free of cost: September 2006 \nSelect and explain. \nA. Minipill, B. Norplant, C. Mala-N, D. Centchroman', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C: Mala-N Mala-D and mala-N are combined pills which contains 20-30 microgram of ethinylestardiol/mestranol with an orally active progestogen (0.5 mg of D-norgestrel in Mala-D and 1 mg of norethisterone in Mala-N).', 'role': 'assistant'}]