<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 12-year-old boy is brought to the physician for a well-child examination. He feels well. He has no history of serious illness. He has received all age-appropriate screenings and immunizations. His 7-year-old brother was treated for nephrotic syndrome 1 year ago. He is at 50th percentile for height and 60th percentile for weight. His temperature is 37C 98.6F, pulse is 90min, and blood pressure is 9654 mm Hg. Physical examination shows no abnormalities. Urine dipstick shows 1 protein. A subsequent urinalysis of an early morning sample shows:Blood negativeGlucose negativeProtein traceLeukocyte esterase negativeNitrite negativeRBC noneWBC 01hpfProteincreatinine ratio 0.2 N 0.2Which of the following is the most appropriate next step in management?? A: Repeat urine dipstick in 1 year, B: Lipid profile, C: 24-hour urine protein collection, D: Measure serum creatinine and urea nitrogen, E: Anti-nuclear antibody level,  <response>: This is a question about managing proteinuria in a 12-year-old boy with a family history of nephrotic syndrome. The key findings in the stem are:- 12-year-old boy, well-child exam - Brother treated for nephrotic syndrome 1 year ago- 1 protein on urine dipstick, trace protein on urinalysis- Normal physical exam, vital signs, urinalysis except for trace protein- Proteincreatinine ratio is 0.2 normal 0.2The abnormal finding is the 1 protein on dipstick. However, the subsequent urinalysis shows only trace protein, a normal proteincreatinine ratio, and is otherwise unremarkable. This suggests transient or orthostatic proteinuria, which is common in children and adolescents. The family history of nephrotic syndrome is a risk factor to monitor. However, there is no evidence currently of significant proteinuria or renal disease.The correct next step would be to repeat the urine dipstick in 1 year to monitor for persistent proteinuria, choice A. A 24-hour urine collection is not warranted given the minimal proteinuria, ruling out choice C. The other tests are unrelated to evaluating proteinuria.A: Repeat urine dipstick in 1 year 