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: Anatomy
[{'content': 'Which is true about synol joint ? \nSelect and explain. \nA. Stability is inversely propoional to mobility, B. Hyaline cailage covers aicular surface of all synol joints., C. Metacarpo-phalangeal joint is a hinge joint, D. "Cailage usually divides the joint into two cavities".', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Stability is inversely propoional to mobility', 'role': 'assistant'}]