<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 20-year-old college student comes to the physician because she has been extremely sad for the past 3 weeks and has to cry constantly. Three weeks ago, her boyfriend left her after they were together for 4 years. She has no appetite and has had a 2.3-kg 5.1-lb weight loss. She has missed several classes because she could not stop crying or get out of bed. She thinks about her ex-boyfriend all the time. She says that she experienced similar symptoms for about 2 months after previous relationships ended. The patient is 158 cm 5 ft 2 in tall and weighs 45 kg 100 lb; BMI is 18 kgm2. Her temperature is 36.1C 97F, pulse is 65min, and blood pressure is 11060 mm Hg. Physical examination shows no abnormalities. On mental status examination she appears sad and cries easily. Which of the following is the most likely diagnosis?? A: Bereavement, B: Adjustment disorder with depressed mood, C: Major depressive disorder, D: Acute stress disorder, E: Anorexia nervosa,  <response>: This is a question about diagnosing a patient with depressive symptoms after a breakup. Based on the information provided, the most important details are that the patient has been extremely sad and crying constantly for the past 3 weeks since her boyfriend of 4 years left her. She also has symptoms of decreased appetite, weight loss, missing classes, and constant thoughts about her ex-boyfriend. Her symptoms are similar to previous breakups. This history points towards an adjustment disorder with depressed mood as the most likely diagnosis, as her symptoms occurred in response to the stressful life event of the breakup and have persisted longer than would be expected for normal bereavement. Major depressive disorder is less likely given the clear precipitating event and history of similar symptom duration with prior breakups. The other answer choices can be ruled out based on lack of supporting evidence in the stem.B: Adjustment disorder with depressed mood 