This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'Pseudomyxoma peritonei is seen with - \nSelect and explain. \nA. Mucinous cystadenocarcinoma ovary, B. Carcinoid appendix, C. Endometrial carcinoma, D. Ileal carcinoid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]