<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 41-year-old nulliparous woman, at 15 weeks gestation comes to the emergency department because of an 8-hour history of light vaginal bleeding. She had a spontaneous abortion at 11 weeks gestation 9 months ago. Vital signs are within normal limits. Abdominal examination is unremarkable. On pelvic examination, there is old blood in the vaginal vault and at the closed cervical os. There are bilateral adnexal masses. Serum β-hCG concentration is 122,000 mIUml. Results from dilation and curettage show hydropic chorionic villi and proliferation of cytotrophoblasts and syncytiotrophoblasts. There are no embryonic parts. Vaginal ultrasound shows that both ovaries are enlarged and have multiple thin-walled, septated cysts with clear content. Which of the following is the most likely cause of the ovarian findings?? A: Serous cystadenomas, B: Theca lutein cysts, C: Corpus luteum cysts, D: Dermoid cyst, E: Follicular cyst,  <response>: This is a medical question about a 41-year-old pregnant woman who is experiencing vaginal bleeding and has bilateral adnexal masses. The key findings are:- 15 weeks gestation - Light vaginal bleeding- History of spontaneous abortion - Bilateral adnexal masses- Elevated β-hCG - Hydropic chorionic villi on DC - Enlarged ovaries with thin-walled, septated cysts with clear contentBased on the clinical presentation, this patient likely has a molar pregnancy, specifically a partial molar pregnancy given the ultrasound findings. The elevated β-hCG and presence of hydropic villi confirm this diagnosis. In molar pregnancies, theca lutein cysts often develop due to the abnormally high β-hCG levels stimulating ovarian hyperstimulation. Therefore, the ovarian cysts described are most likely theca lutein cysts.B: Theca lutein cysts 