This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tumors, Subject name: Ophthalmology
[{'content': 'Most common site of distant metastasis in intraorbital malignant melanoma is- \nSelect and explain. \nA. Brain, B. Lung, C. Liver, D. Lymph nodes', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The most common primary cancers with orbital metastases are breast, lung, and prostate. Breast consistently ranks the most common primary site, with 48%-53% ofmetastatic orbital lesions. Other sitesinclude kidney, thyroid, stomach, melanoma, and pancreas. ... Scirrhous breast carcinoma may present with enophthalmos. Ref khurana 6/e', 'role': 'assistant'}]