This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vitreous and retina, Subject name: Ophthalmology
[{'content': 'Most common site for retinal break is \nSelect and explain. \nA. Upper temporal, B. Lower temporal, C. Upper nasal, D. Lower nasal', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Upper temporal region is most common site for retinal break The mechanism most commonly involves a break in the retina that then allows the fluid in the eye to get behind the retina. A break in the retina can occur from a posterior vitreous detachment, injury to the eye, or inflammation of the eye. Other risk factors include being sho sighted and previous cataract surgery Reference: Aravind FAQS in Ophthalmology; First Edition; Page no: 371', 'role': 'assistant'}]