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: ENT
While Ear toileting water is pushed along 
Select and explain. 
A. Antero superior wall of EAC, B. Postero superior wall of EAC, C. Antero inferior wall of EAC, D. Postero inferior wall of EAC
B: Postero superior wall of EAC
Answer: B: Postero superior wall of EAC 
Explanation: None