Detailed Instructions: In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Q: Question: In relation to intraductal papillary mucinous tumors of the pancreas, point out the WRONG statement:
Options: <1> They are potentially malignant tumors. <2> Its frequency has increased notably in the last decade. <3> Three subtypes are distinguished: main conduit, secondary conduit and mixed conduit. <4> They should be excised as soon as they are diagnosed, except the main duct variety. <5> Its first clinical manifestation can be a picture of acute pancreatitis.
A:
4