You are answering a USMLE-style medical question. Question: A 33-year-old woman, gravida 2, para 1, at 26 weeks' gestation presents to the emergency department because of frequent contractions. The contractions last 40 seconds, occur every 2 minutes, and are increasing in intensity. She has a history of recurrent painful ulcers on her vulva, but she currently does not have them. Her first child was delivered by lower segment transverse cesarean section because of a non-reassuring fetal heart rate. Her current medications include acyclovir, folic acid, and a multivitamin. Her temperature is 36.9°C (98.4°F), heart rate is 88/min, and blood pressure is 126/76 mm Hg. Contractions are felt on the abdomen. The cervix is dilated to 5 cm, 70% effaced, and the station of the head is -2. A fetal ultrasound shows no abnormalities. Which of the following is the most appropriate next step in management? Options: A) Allow vaginal delivery B) Initiate misoprostol therapy C) Initiate nifedipine therapy D) Perform dilation and evacuation Reply with ONLY the letter of the correct answer (A, B, C, or D). No explanation.