An eight-year-old female Saint Bernard is presented with right pelvic limb lameness and swelling above the hock. (Rads show single aggressive bone lesion involving distal tibia). Which one of the following choices is the most likely form of neoplasia based on radiographic appearance and incidence of occurrence?

A - Hemangiosarcoma
B - Lymphosarcoma
C - Melanoma
D - Osteosarcoma
E - Fibrosarcoma