What is the name of the connective tissue membrane found lining the joint cavities?

The connective tissue membranes that are found lining the joint cavities are called the synovial membranes. Joint cavities, like the shoulders, elbows, or knees, are known as freely movable joints. The synovial membranes line joint cavities that are not open to the outside.

Ithink that b is correct but just in case wait to see if someone else answers