<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 70-year-old woman, gravida 5, para 5, comes to the physician for the evaluation of sensation of vaginal fullness for the last six months. During this period, she has had lower back and pelvic pain that is worse with prolonged standing or walking. The patient underwent a hysterectomy at the age of 35 years because of severe dysmenorrhea. She has type 2 diabetes mellitus and hypercholesterolemia. Medications include metformin and atorvastatin. Vital signs are within normal limits. Pelvic examination elicits a feeling of pressure on the perineum. Pelvic floor muscle and anal sphincter tone are decreased. Pelvic examination shows protrusion of posterior vaginal wall with Valsalva maneuver and vaginal discharge. Which of the following is the most likely diagnosis?? A: Bartholin gland cyst, B: Atrophic vaginitis, C: Infectious vulvovaginitis, D: Enterocele, E: Vaginal cancer,  <response>: This is a question about a 70-year-old postmenopausal woman with a history of hysterectomy presenting with vaginal fullness, pelvic pain, and protrusion of the posterior vaginal wall. The key findings are:- Sensation of vaginal fullness- Lower back and pelvic pain worse with standingwalking - History of hysterectomy - Diabetes and hypercholesterolemia- Feeling of pressure on perineum on exam- Decreased pelvic flooranal sphincter tone - Protrusion of posterior vaginal wall with Valsalva - Vaginal dischargeBased on the patients age, postmenopausal status, prior hysterectomy, pelvic exam findings showing posterior vaginal wall protrusion with Valsalva and decreased pelvic floor tone, the most likely diagnosis is enterocele. Bartholin gland cyst, atrophic vaginitis, and infectious vulvovaginitis would not cause posterior vaginal wall protrusion. Vaginal cancer could cause protrusion but would be less likely in the absence of bleeding or mass.D: Enterocele 