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
Which tumor is not seen in the anterior mediastinum - 
Select and explain. 
A. Teratoma, B. Thymic tumors, C. Thyroid tumors, D. Neurofibroma
D: Neurofibroma
Answer: D: Neurofibroma 
Explanation: None