<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 13-year-old boy presents to the emergency department with severe abdominal pain. His parents state that he has been complaining of abdominal pain that became increasingly severe this evening. They also state he has been eating much more lately yet still has been losing weight. The patients past medical history is unremarkable and he is not currently on any medications. His temperature is 99.5F 37.5C, blood pressure is 9058 mmHg, pulse is 150min, respirations are 24min, and oxygen saturation is 98 on room air. Physical exam is notable for diffuse abdominal tenderness and tachycardia. Laboratory values are ordered as seen below.Hemoglobin: 12 gdLHematocrit: 36Leukocyte count: 6,500mm3 with normal differentialPlatelet count: 197,000mm3Serum:Na: 139 mEqLCl-: 100 mEqLK: 4.3 mEqLBUN: 20 mgdLGlucose: 599 mgdLCreatinine: 1.1 mgdLAST: 12 ULALT: 10 ULWhich of the following laboratory changes best reflects this patients physiology as compared to his baseline?? A: A, B: B, C: C, D: D, E: E,  <response>: This is a case of a 13-year-old boy presenting with severe abdominal pain, increased appetite, weight loss, fever, tachycardia, and abdominal tenderness. The key lab findings are an elevated blood glucose of 599 mgdL normal 70-100 mgdL along with normal electrolytes, kidney function, and liver enzymes. The very high blood glucose along with his symptoms of increased appetite, weight loss, and abdominal pain are classic for new onset type 1 diabetes mellitus. The high blood glucose reflects insulin deficiency and impaired glucose utilization. The other lab values are normal because this is an acute presentation before diabetic ketoacidosis has developed.Therefore, the elevated blood glucose best reflects the patients acute physiology compared to his non-diabetic baseline state.C: C 