This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Contraception, Subject name: Gynaecology & Obstetrics
[{'content': 'Which of the following oral contraceptive pills have the least amount of estrogen? \nSelect and explain. \nA. Mala N, B. Triquilar, C. Femilon, D. Novelon', 'role': 'user'}, {'content': "Answer: C \nExplanation: newer oral pill (Femilon) contains 20 mcg EE2. Reference: Shaw's Textbook of Gynaecology 16th edition page no 274", 'role': 'assistant'}]