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': 'Presbyopia is due to \nSelect and explain. \nA. Loss of elasticity of lens capsule, B. Weakness of ciliary muscle, C. Weakness of suspensory ligament, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. All of the above', 'role': 'assistant'}]