The plain film shows lateral bone destruction at the lower end of the femur， presenting with mouth-eaten and triangle periosteal and soft tissue masses. The most likely diagnosis is （）：

The plain film shows lateral bone destruction at the lower end of the femur， presenting with mouth-eaten and triangle periosteal and soft tissue masses. The most likely diagnosis is （）：
A.Giant cell tumor of bone
B.Chondrosarcoma
C.Osteolytic osteosarcoma
D.Fibrosarcoma
E.Myeloma
正确答案：Osteolytic osteosarcoma