<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:Three hours after the onset of labor, a 39-year-old woman, gravida 2, para 1, at 40 weeks gestation has sudden worsening of abdominal pain and vaginal bleeding. 18 months ago her first child was delivered by a lower segment transverse cesarean section because of cephalopelvic disproportion. Her temperature is 37.5C 99.5F, pulse is 120min, respirations are 20min, and blood pressure is 9050 mm Hg. Examination shows abdominal tenderness and the absence of uterine contractions. The cervix is 100 effaced and 10 cm dilated; the vertex is at -3 station. An hour before, the vertex was at 0 station. Cardiotocography shows fetal bradycardia, late decelerations, and decreased amplitude of uterine contractions. Which of the following is the most specific feature of this patients condition?? A: Loss of fetal station, B: Hemodynamic instability, C: Fetal distress, D: Absent uterine contractions, E: Abdominal tenderness,  <response>: This is a patient who had a previous cesarean section and is now in active labor at term. She is experiencing sudden worsening abdominal pain, vaginal bleeding, fetal bradycardia with late decelerations, and loss of fetal station from 0 to -3. The key finding here is the rapid loss of fetal station from 0 to -3 station, which indicates descent of the fetus into the pelvis is being obstructed. This rapid loss of station in a patient with a previous cesarean delivery suggests uterine rupture, which is a rupture or dehiscence of the uterine scar from the prior surgery. Uterine rupture would explain the sudden worsening pain, bleeding, fetal heart rate abnormalities, and loss of fetal station. The other findings of hemodynamic instability, fetal distress, absent contractions, and abdominal tenderness are nonspecific and could be seen in other conditions as well.A: Loss of fetal station 