This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardio thoracic surgery  , Subject name: Surgery
Most common tumor in the posterior mediastinum is 
Select and explain. 
A. Neurofibroma, B. Teratoma, C. Lymphoma, D. Bronchogenic cyst
A: Neurofibroma
Answer: A: Neurofibroma 
Explanation: Most common tumour of posterior mediastinum is neurofibromas constituting 75% of the total.Others include ganglioneuromas,aneurysm of descending aoa,lymph node mass. Reference: SRB's manual of surgery,5th edition,page no:1126.