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': 'In an infeile woman, endometrial biopsy reveals proliferative changes. Which Hormone should be prefered? \nSelect and explain. \nA. MDPA, B. Desogestrol, C. Norethisterone, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Synthetic analogues of progesterone like medroxyprogesterone acetate or norethindrone acetate, suppress ovulation and endometrial growth. Ref: Diagnosis Of Endometrial Biopsies And Curettings: A Practical Approach By Michael T. Mazur, Robe J. Kurman, 2005, Page 122', 'role': 'assistant'}]