When the Health Care Provider Tells a Patient That the Pain

When the health care provider tells a patient that the pain in the patient's knee is caused by bursitis, the patient asks the nurse to explain just what bursitis is. The nurse's best response would be to tell the patient bursitis is an inflammation of

A) the fibrocartilage that acts as a shock absorber in the knee joint.
B) a small, fluid-filled sac found at many joints.
C) any connective tissue that is found supporting the joints of the body.
D) the synovial membrane that lines the area between two bones of a joint.