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': 'Expulsive choroidal haemorrhage is caused by rupture of: \nSelect and explain. \nA. Retinal vessels, B. Sho posterior ciliary aeries, C. The choriocapillaris, D. Long posterior ciliary aeries', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Sho posterior ciliary aeries', 'role': 'assistant'}]