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': 'All except one is true regarding progestin only contraceptives \nSelect and explain. \nA. Also called mini pills, B. Have minimal effect on carbohydrates metabolism, C. Pill is taken on alternate days, D. High incidence of irregular bleeding', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Pill is ideally taken daily at the same time.', 'role': 'assistant'}]