<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 30-year-old woman, gravida 2, para 1, at 42 weeks gestation is admitted to the hospital in active labor. Pregnancy has been complicated by gestational diabetes, for which she has been receiving insulin injections. Her first child was delivered by lower segment transverse cesarean section because of a nonreassuring fetal heart rate. Her pulse is 90min, respirations are 18min, and blood pressure is 13580 mm Hg. The fetal heart rate tracing shows a baseline heart rate of 145min and moderate variation with frequent accelerations and occasional early decelerations. She undergoes an elective repeat lower segment transverse cesarean section with complete removal of the placenta. Shortly after the operation, she starts having heavy uterine bleeding with passage of clots. Examination shows a soft uterus on palpation. Her bleeding continues despite fundal massage and the use of packing, oxytocin, misoprostol, and carboprost. Her pulse rate is now 120min, respirations are 20min, and blood pressure is 9070 mm Hg. Her hemoglobin is 8 gdL, hematocrit is 24, platelet count is 120,000 mm3, prothrombin time is 11 seconds, and partial thromboplastin time is 30 seconds. Mass transfusion protocol is activated and a B-Lynch uterine compression suture is placed to control her bleeding. Which of the following is the mostly likely cause of her postpartum complication?? A: Lack of uterine muscle contraction, B: Uterine inversion, C: Adherent placenta to myometrium, D: Infection of the endometrial lining of the uterus, E: Uterine rupture,  <response>: This is a question about postpartum hemorrhage in a woman who underwent a repeat cesarean section. Based on the information provided, the most likely cause of her heavy bleeding is lack of adequate uterine contraction after delivery. Key points from the stem:- 42 weeks gestation, active labor- History of prior cesarean section for nonreassuring fetal heart rate- Underwent repeat elective cesarean section- After surgery, had heavy bleeding not responsive to usual treatments like fundal massage, oxytocin, misoprostol, carboprost - Vital signs showing tachycardia and hypotension indicating significant blood loss- Labs confirm blood loss with low hemoglobin and hematocritThe uterus normally contracts down after delivery of the placenta, which helps to compress blood vessels and slowstop bleeding. Lack of adequate uterine tone is the most common cause of postpartum hemorrhage. The other options can cause bleeding but are less likely in this clinical scenario.A: Lack of uterine muscle contraction 