<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 15-year-old girl is brought to the physician because of a 2-week history of vaginal discharge. She has type 1 diabetes mellitus and her only medication is insulin. Menses occur at 28- to 29-day intervals, and her last menstrual period was 3 weeks ago. She does not want to share information regarding sexual activity. She is at the 60th percentile for height and weight. Vital signs are within normal limits. Examination shows Tanner stage II breast development. Pelvic examination shows white, thin, odorless vaginal discharge. A wet mount of the discharge shows no abnormalities. Which of the following is the most likely diagnosis?? A: Bacterial vaginosis, B: Vaginal foreign body, C: Trichomoniasis, D: Physiologic leukorrhea, E: Vaginal candidiasis,  <response>: This is a clinical case scenario involving a 15-year-old girl with vaginal discharge. Based on the information provided, the key findings are: - 2-week history of vaginal discharge- Type 1 diabetes mellitus, on insulin- Regular menstrual cycles - Unwilling to share sexual activity information- Normal vital signs and physical exam except for: - Tanner stage II breast development - Thin, white, odorless vaginal discharge - Normal vaginal wet mountThe differential diagnosis includes:- Bacterial vaginosis: Usually thin gray discharge with fishy odor- Vaginal foreign body: Could cause discharge but unclear source here- Trichomoniasis: Often green-yellow frothy discharge- Physiologic leukorrhea: Matches thin, white, odorless discharge- Vaginal candidiasis: Typically thick, white, cottage cheese-like dischargeGiven the thin, white, odorless discharge and normal wet mount, the most likely diagnosis is physiologic leukorrhea.D: Physiologic leukorrhea 