<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 36-year-old primigravid woman at 8 weeks gestation comes to the emergency department because of vaginal bleeding and mild suprapubic pain 1 hour ago. The bleeding has subsided and she has mild, brown spotting now. Her medications include folic acid and a multivitamin. She smoked one pack of cigarettes daily for 10 years and drank alcohol occasionally but stopped both 6 weeks ago. Her temperature is 37C 98.6F, pulse is 92min, and blood pressure is 11677 mm Hg. Pelvic examination shows a closed cervical os and a uterus consistent in size with an 8-week gestation. Ultrasonography shows an intrauterine pregnancy and normal fetal cardiac activity. Which of the following is the most appropriate next step in management?? A: Reassurance and follow-up ultrasonography, B: Low-dose aspirin therapy, C: Progestin therapy, D: Cervical cerclage, E: Complete bed rest,  <response>: This is a question about the management of a pregnant woman with vaginal bleeding and abdominal pain in the first trimester. The key findings are:- 36-year-old primigravid woman at 8 weeks gestation - Vaginal bleeding 1 hour ago, now resolved with only mild brown spotting- Mild suprapubic pain- Vital signs are normal- Pelvic exam shows closed cervical os, uterus size consistent with 8 weeks- Ultrasound shows intrauterine pregnancy and normal fetal cardiac activityThe most likely diagnosis is a threatened miscarriage given the history of vaginal bleeding and abdominal pain in early pregnancy. However, the bleeding has resolved, vital signs are normal, ultrasound shows a normal intrauterine pregnancy, and the cervix is closed on exam. This indicates the pregnancy is likely viable at this point. The next step should be conservative management with close follow-up. Cerclage, progestins, and bed rest are not indicated given exam and ultrasound findings. Low-dose aspirin is not specifically indicated. The most appropriate next step is reassurance and follow-up ultrasound to ensure the pregnancy continues to progress normally.A: Reassurance and follow-up ultrasonography 