You are answering a USMLE-style medical question. Question: A 6-week-old girl is brought to the pediatrician for a post-natal visit. She was born at 38 weeks gestation to a 25-year-old woman via an uncomplicated spontaneous vaginal delivery. The mother reports that prenatal screening revealed no developmental abnormalities and that the baby has been gaining weight, feeding, stooling, and urinating appropriately. Physical exam of the infant is unremarkable. The mother has a history of polycystic ovarian syndrome and is curious about the development of her daughter's ovaries. Which of the following is true regarding the baby’s reproductive system at this time? Options: A) The baby has not yet developed oocytes B) The baby’s oocytes are arrested in prophase C) The baby’s oocytes are arrested in interphase D) The baby’s oocytes are fully matured Reply with ONLY the letter of the correct answer (A, B, C, or D). No explanation.