A Nurse Is Caring for a Patient with Cholilithiasis Who

A nurse is caring for a patient with cholilithiasis who has a new laboratory finding of serum amylase of 300 units/L. The patient states, "My primary healthcare provider said I don't have pancreatitis." What is the most likely explanation for the laboratory finding?

A) The gallstone is causing acute cholecystitis.
B) The gallstone has migrated to the neck of the pancreas.
C) The gallstone has caused bile to back into the pancreas.
D) The gallstone is blocking the common bile duct.