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: Anatomy
Blood supply of thoracic part of esophagus 
Select and explain. 
A. Aorta, B. Inferior thyroid artery, C. Gastric artery, D. Superior thyroid artery
A: Aorta
Answer: A: Aorta 
Explanation: Blood supply of thoracic part of oesophagus is aorta.