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
Internal opening of brachial fistula is located at 
Select and explain. 
A. Around 3rd molar, B. Around 2nd Premolar, C. Behind Palatoglossal Arch, D. Fossa of Tonsils
D: Fossa of Tonsils
Answer: D: Fossa of Tonsils 
Explanation: None