Violation

Which of the following bone lesions of the mandible is/are malignant? 1. Osteosarcoma. 2. Osteochondroma. 3. Ewing's tumor. 4. Fibrous dysplasia

(1) and (3)

(1) (2) (3)

(4) only

(2) and (4)

All of the above.

Please describe the matter of abuse