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': 'Best method of treatment for segmental trichiasis \nSelect and explain. \nA. Epilation, B. Electrolysis, C. Cryoepilation, D. Argon laser destruction', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Cryoepilaion\nCryoprobe with -20oc is applied for 20-25 seconds.', 'role': 'assistant'}]