A 30-year-old man has a history of ulcerative colitis for five years.He has now had acute flare over one week，and developed high fever，bloody diarrhea with bowel movements more than 10 per day，as well as abdominal distention，cecum with a diameter of 13cm，and transverse colon diameter of 8cm on X-ray.Which of the following is the most likely diagnosisWhich of the following is the best next step

  • A: Oral proton pump inhibitor
  • B: Oral azathioprine or 6-Mercaptopurine
  • C: Antibiotics and prompt surgical consultation
  • D: Diuretic therapy
  • E: Oral 5-aminosalicylate

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