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: Orthopaedics
[{'content': 'All of the following statements about synovial fluid are true. Except- \nSelect and explain. \nA. Follows Non - Newtonian fluid kinetics, B. Secreted primarily by type A synovial cells, C. Contains hyaluronic acid, D. Viscosity is variable', 'role': 'user'}, {'content': 'Answer: B \nExplanation: synovial fluid is plasma transudate from synovial capillaries, modified by secretory activities of type-B synovial lining cells.', 'role': 'assistant'}]