<prompt>  A 15-year-old boy reports with a rapidly growing swelling of the mandible with intermittent pain. Patient history is that the swelling occurred after an episode of trauma. Radiographs reveal formation of new subperiosteal bone producing Onion Skin appearance. The patient also has lip paresthesia elevated white blood cell countOne of the following statements is true for Ewings sarcomaAn episode of trauma often precedes development of Ewings sarcomaTrauma is the main etiology in the development of Ewings sarcomaRelationship between trauma and Ewings sarcoma has never been reportedTrauma can be considered as etiology for Ewings sarcoma provided there is secondary infection 