Which of the following is a compound condylar joint?

Knee joint has more than two bones paicipating (hence Compound joint). It is formed by lateral and medial femorotibial and the femoropatellar joints It is Compound synol joint incorporating two condylar joints between the condyles of the femur and tibia and one saddle joint between the femur and the patella TM joint is a condylar joint but it involves only 2 bones( not a compound joint) Wrist joint is an ellipsoid synol joint and elbow is a hinge synol joint Ref: Gray's39e/p185-210