<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 52-year-old woman presents to the urgent care center with several hours of worsening abdominal discomfort that radiates to the back. The patient also complains of malaise, chills, nausea, and vomiting. Social history is notable for alcoholism. On physical exam, she is febrile to 39.5C 103.1F, and she is diffusely tender on abdominal palpation. Other vital signs include a blood pressure of 12674 mm Hg, heart rate of 74min, and respiratory rate of 14min. Complete blood count is notable for 13,500 white blood cells WBCs, and her complete metabolic panel shows bilirubin of 2.1 and amylase of 3210. Given the following options, what is the most likely diagnosis?? A: Cholelithiasis, B: Acute cholecystitis, C: Gallstone pancreatitis, D: Choledocholithiasis, E: Ascending cholangitis,  <response>: Based on the information provided in the question stem, the key findings are:- 52-year-old woman with worsening abdominal pain radiating to the back- Associated symptoms of fever, chills, nausea, vomiting - History of alcoholism- Tender abdomen on exam, febrile to 39.5C - Leukocytosis of 13,500 WBCs- Elevated amylase of 3210- Normal bilirubinThe acute onset of severe abdominal pain with radiation to the back, fever, leukocytosis, and highly elevated amylase are classic for acute pancreatitis. The history of alcoholism is a common risk factor. Normal bilirubin makes biliary causes like cholelithiasis, cholecystitis, and cholangitis less likely. Therefore, the most likely diagnosis is gallstone pancreatitis.C: Gallstone pancreatitis 