This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Spleen, Subject name: Surgery
[{'content': 'Most common cause of isolated splenic metastasis is: \nSelect and explain. \nA. Carcinoma pancreas, B. Carcinoma stomach, C. Carcinoma ovary, D. Carcinoma cervix', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Causes of isolated splenic metastasis: Carcinoma Ovary (27%) > Colorectal carcinoma (26%) > Uterine cancer (17%) MC primary for metastasis of spleen: Malignant melanoma (30-50%) > Ca Breast (21%) > Ca lung (18%)', 'role': 'assistant'}]