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: Gynaecology & Obstetrics
[{'content': 'All of the following tumour metastasizes to ovary except : \nSelect and explain. \nA. Gastric carcinoma, B. Colonic carcinoma, C. Cervical carcinoma, D. Breast carcinoma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Cervical carcinoma', 'role': 'assistant'}]