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: Ophthalmology
[{'content': 'Most Common Tumour of Eyelid is: \nSelect and explain. \nA. Sebaceeous Ca, B. BCC, C. SCC, D. Malignant melanoma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: BCC', 'role': 'assistant'}]