<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 24-year-old woman, gravida 1, at 35 weeks gestation is admitted to the hospital with regular contractions and pelvic pressure for the last 5 hours. Her pregnancy has been uncomplicated and she has attended many prenatal appointments and followed the physicians advice about screening for diseases, laboratory testing, diet, and exercise. She has had no history of fluid leakage or bleeding. At the hospital, her temperature is 37.2C 99.0F, blood pressure is 10860 mm Hg, pulse is 88min, and respirations are 16min. Cervical examination shows 60 effacement and 5 cm dilation with intact membranes. Cardiotocography shows a contraction amplitude of 220 MVU in 10 minutes. Which of the following is the most appropriate pharmacotherapy at this time?? A: Dexamethasone, B: Magnesium sulfate, C: Oxytocin, D: Terbutaline, E: No pharmacotherapy at this time,  <response>: This is a question about appropriate pharmacotherapy for a woman at 35 weeks gestation who is admitted with regular contractions and pelvic pressure, indicating possible preterm labor. Her vital signs are normal and she is in the active phase of labor. The goal would be to stop preterm labor to allow the pregnancy to continue closer to term. Oxytocin would stimulate contractions so is not appropriate. Dexamethasone could be given to promote fetal lung maturity if delivery is likely within 7 days, but is not needed to stop preterm labor. Terbutaline is a beta-agonist that can be used to relax the uterus and suppress contractions. Magnesium sulfate also can be used to suppress preterm labor. However, at this point in her labor, it would be reasonable to allow labor to progress without pharmacotherapy.E: No pharmacotherapy at this time 