This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: PCOD, hirsutism and galactorrhea, Subject name: Gynaecology & Obstetrics
[{'content': 'A 20 year average weight female presented with oligomenorrhea and abnormal facial hair growth along with high serum free testosterone levels. On USG the ovaries are normal. The diagnosis : \nSelect and explain. \nA. Idiopathic hirsutism, B. PCOD, C. endometriosis, D. Adrenal hyperplaia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Rotterdam criteria of PCOS Diagnosis of PCOS should be based on at least two of three major criteria, including (1) Oligo/anovulation, (2) Clinical or Biochemical signs of Hyperandrogenism (Hirusitism,Acne,Androgenic alopecia.) (3) Polycystic ovaries (as identified by ultrasonography), also excluding other androgen excess disorders Ref: Clinical Gynecologic Endocrinology and Infeility; Eigth edition; Chapter 12', 'role': 'assistant'}]