You are shown two films from an ERCP in a 40-year-old woman with abdominal pain. What is the MOST likely diagnosis?

A. A double duct sign (dilation of both the common bile duct and main pancreatic duct) is not seen. B. The common bile duct is not dilated. C. The first image shows injection of the major papilla and opacification of the common bile duct and duct of Wirsung, but no opacification of the main pancreatic duct. The second image shows injection of the minor papilla with opacification of the main pancreatic duct, but no opacification of the common bile duct. This is characteristic of pancreas divisum. D. No opacified pancreatic duct is seen to the right of the duodenum.