This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pancreas, Subject name: Pathology
[{'content': 'Maximum progression to pancreatic carcinoma occurs in? \nSelect and explain. \nA. Intraductal papillary mucinous neoplasms, B. Pseudopancreatic cyst, C. Serous cystic neoplasms, D. Mucinous cystic neoplasms', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Intraductal papillary mucinous neoplasms(Ref: Robbins 9th/pg 892-894; 8th/pg 900-903)A. Intraductal papillary mucinous neoplasmsIPMNs progress to an invasive cancerB. Solid-pseudopapillary neoplasmsUsually benignC. Serous cystic neoplasmsAlways benignD. Mucinous cystic neoplasms1/3rd associated with invasive adenocarcinoma', 'role': 'assistant'}]