A 24 yrs female presents with three day history of epigastric pain radiating to back.Serum amylase levels were observed to be normal while USG abdomen reveals gall bladder stones and an enlarged pancreas.CT abdomen was done which clinched the diagnosis. The most possible diagnosis is-

• A. Acute Pancreatitis
• B. Acute Cholecystitis
• C. Acute Peritonitis
• D. Acute Appendicitis