<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 50-year-old Caucasian man is admitted to the ER with an 8-hour history of intense abdominal pain that radiates to the back, nausea, and multiple episodes of vomiting. Past medical history is insignificant. His blood pressure is 9060 mm Hg, pulse is 120min, respirations are 20min, and body temperature is 37.8C 100F. Upon examination, he has significant epigastric tenderness, and hypoactive bowel sounds. Serum lipase and amylase are elevated and the patient rapidly deteriorates, requiring transfer to the intensive care unit for a month. After being stabilized, he is transferred to the general medicine floor with an abdominal computed tomography CT reporting a well-circumscribed collection of fluid of homogeneous density. Which of the following best describes the condition this patient has developed?? A: Pancreatic pseudocyst, B: Walled-off necrosis, C: Acute necrotic collection, D: Pancreatic cancer, E: Fistula formation,  <response>: This is a clinical case scenario describing a patient with acute pancreatitis that has developed a complication. The key findings are:- Acute onset severe abdominal pain radiating to the back, nausea, vomiting - Epigastric tenderness, hypoactive bowel sounds- Elevated serum amylase and lipase confirming diagnosis of acute pancreatitis- Rapid clinical deterioration requiring ICU care- CT scan showing a well-circumscribed fluid collection after initial stabilizationBased on the clinical course, imaging findings, and time course, the patient has likely developed a pancreatic pseudocyst as a complication of acute pancreatitis. A pseudocyst is a well-circumscribed fluid collection usually arising more than 4 weeks after an episode of acute pancreatitis. The other choices can be ruled out: walled-off necrosis and acute necrotic collection occur earlier in the disease course, pancreatic cancer would not cause acute pancreatitis, and a fistula is less likely in this scenario.A: Pancreatic pseudocyst 