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
Most common site of distant metastasis in intraorbital malignant melanoma is- 
Select and explain. 
A. Brain, B. Lung, C. Liver, D. Lymph nodes
C: Liver
Answer: C: Liver 
Explanation: 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