This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cataract, Subject name: Ophthalmology
[{'content': 'Zonules of zinn: \nSelect and explain. \nA. Provide stability to eyeball, B. Suspend the lens, C. Are attached at posterior pole of lens, D. Are attached to extraocular muscles', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Zonules of zinn suspend the lens and enable the ciliary muscles to act upon them. Suspensory ligaments of lens : Also called zonules of zinn & ciliary zonules. Consist of fibres passing from ciliary body to lens. Extend from ora serrata to edge of the lens. Hold the lens in position. Enable the ciliary muscles to act upon them in accommodation.', 'role': 'assistant'}]