This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders in Menstruation, Subject name: Gynaecology & Obstetrics
Prepubertal PCOS, risk factors are all except 
Select and explain. 
A. Increased birth weight, B. Premature Adrenarche, C. Obesity with acanthosis nigricans, D. Atypical sexual precocity
A: Increased birth weight
Answer: A: Increased birth weight 
Explanation: Ans. is a, i.e. Increased birth weightRef: Williams gynae 3rd/ed, p397Risk factors for PCOS in ad descent girls* Low birth weight* Premature adrenarche* Obesity with acanthosis nigricans* Atypical sexual precocity