<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 30-year-old primigravid woman at 16 weeks gestation comes to the emergency department because of vaginal bleeding. She has had spotting for the last 2 days. She has had standard prenatal care. A viable uterine pregnancy was confirmed on ultrasonography during a prenatal care visit 2 weeks ago. She reports recurrent episodes of pain in her right wrist and both knees. Until pregnancy, she smoked one pack of cigarettes daily for the past 11 years. Pelvic examination shows an open cervical os and blood within the vaginal vault. Laboratory studies show:Hemoglobin 9.6 gdLLeukocyte count 8,200mm3Platelet count 140,000mm3Prothrombin time 14 secondsPartial thromboplastin time 46 secondsSerumNa 136 mEqLK 4.1 mEqLCl- 101 mEqLUrea nitrogen 12 mgdLCreatinine 1.3 mgdLAST 20 ULALT 15 ULUltrasonography shows an intrauterine pregnancy and no fetal cardiac activity. Which of the following is the most likely explanation for this patients examination findings?? A: Preeclampsia, B: Chromosomal abnormalities, C: Subchorionic hematoma, D: Hyperfibrinolysis, E: Placental thrombosis,  <response>: This is a question about a pregnant woman at 16 weeks gestation who is experiencing vaginal bleeding and other symptoms. The key details in the question stem are:- 30-year-old primigravid woman at 16 weeks gestation - Vaginal bleeding and spotting for 2 days- Viable pregnancy confirmed 2 weeks ago- Recurrent pain in right wrist and knees- History of smoking 1 pack per day for 11 years- Open cervical os, blood in vaginal vault- Lab results showing low hemoglobin, platelet count, elevated PTT- Ultrasound showing intrauterine pregnancy with no fetal cardiac activityBased on the history, symptoms, and test results, this appears to be a case of either placental abruption, placenta previa, or possibly a thrombotic event or coagulation disorder resulting in loss of pregnancy. The right answer choice should reflect one of these potential diagnoses.E: Placental thrombosis 