You are answering a USMLE-style medical question. Question: A 29-year-old primigravid woman at 35 weeks' gestation is admitted to the hospital in labor. She has no history of serious medical illness. She has had an uncomplicated pregnancy. Her last ultrasound at 22 weeks' gestation was normal. On admission, fetal heartbeats cannot be detected by fetal doppler monitor. Ultrasound shows decreased amniotic fluid levels and no evidence of fetal movement, respiration, or heart activity. The patient gives birth to a 2296 g (5 lb 1 oz) male infant. Physical examination shows no signs of life. There are no visible malformations. The placenta is unremarkable. Which of the following is the most appropriate next step in management? Options: A) Perform karyotyping of amniotic fluid B) Recommend autopsy of the infant C) Obtain photographs, x-ray imaging, and MRI D) Obtain consent for parental genetic testing Reply with ONLY the letter of the correct answer (A, B, C, or D). No explanation.