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': 'The largest ovarian tumour is seen with? \nSelect and explain. \nA. Pseudomucinous cystadenoma, B. Serous cystadenoma, C. Papillary cystadenoma, D. Dysgerminoma', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Pseudomucinous cystodenomao Mucinous tumor tend to produce larger cystic masses, and some have been recorded with weights of more than 25 kg.", 'role': 'assistant'}]