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
Gardner syndrome does not include: 
Select and explain. 
A. Osteomas, B. Epidermoid cysts, C. Osteosarcoma, D. Impacted permanent teeth
C: Osteosarcoma
Answer: C: Osteosarcoma 
Explanation: None