This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diseases of orbit, Lids and lacrimal apparatus, Subject name: Ophthalmology
[{'content': "Treatment for mild ptosis is - \nSelect and explain. \nA. fasanella servat operation, B. Levator resection, C. Frontalis sling operation, D. Everbusch's operation", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Also known as tarsoconjuctivomullerectomy. Upper lid is eveed and upper tarsal border along with its attached muller muscle and conjuctiva is resected. Ref : ak khurana 6th edition REF IMG', 'role': 'assistant'}]