A Medical Student, While Playing Football, Collided with Another Player

A medical student, while playing football, collided with another player and fell to the ground. As he fell, the right knee, which was taking the weight of his body, was partially flexed; the femur was rotated medially; and the leg was abducted on the thigh. A sudden pain was felt in the right knee joint, and he was unable to extend it. The student was diagnosed as having a torn medial meniscus of the knee joint.
-The following statements concerning this case confirmed the diagnosis except which?

A) The right knee joint quickly became swollen.
B) Severe local tenderness was felt along the medial side of the joint line.
C) The medial meniscus split along part of its length, and the detached portion became jammed between the articular surfaces, limiting further extension.
D) The trauma stimulated the production of synovial fluid, which filled the joint cavity.
E) The distension of the suprapatellar bursa was responsible for the large amount of swelling above the injured knee.
F) The pain sensation from the injured knee was confined to the femoral nerve as it ascended to the central nervous system.