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': "A patient presented with sudden onset of floater and perception of falling of a cuain (veil) in front of the eye which one of the following is the most appropriate diagnosis: \nSelect and explain. \nA. Retinal detachment, B. Eale's disease, C. Vitreous haemorrhage, D. Glaucoma", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Retinal detachment', 'role': 'assistant'}]