What Is the Function of the Synovial Membrane's Type a Cells

What is the function of the synovial membrane's type A cells within the intima?

A) To release mast cells, initiating the inflammatory process after joint injury
B) To ingest and remove bacteria and debris by phagocytosis in the joint cavity
C) To secrete hyaluronate, a binding agent that gives synovial fluid its viscous quality
D) To store fat cells and glycogen, providing adenosine triphosphate for joint activity