<prompt> Prepubertal PCOS, risk factors are all exceptIncreased birth weightPremature AdrenarcheObesity with acanthosis nigricansAtypical sexual precocity  <response>: Ans. is a, i.e. Increased birth weightRef: Williams gynae 3rded, p397Risk factors for PCOS in ad descent girls Low birth weight Premature adrenarche Obesity with acanthosis nigricans Atypical sexual precocity 