This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Osteosarcoma of the jaw: 
Select and explain. 
A. Occurs mostly in the maxilla, B. Seen in old age, C. Highly malignant tumour which shows early metastasis, D. Shows a soap bubble type of radiolucency in radiographs
C: Highly malignant tumour which shows early metastasis
Answer: C: Highly malignant tumour which shows early metastasis 
Explanation: None