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
An elderly male presents with history of dysphagia, regurgitation foul breath and cough. Bilateral Lung crepts are noted on examination. The most likely diagnosis is - 
Select and explain. 
A. Shatzki Ring, B. Zenker's Diverticulum, C. Corkscrew Esophagus, D. Plummer-Vinson Syndrome
B: Zenker's Diverticulum
Answer: B: Zenker's Diverticulum 
Explanation: Features of Dysphagia, Halitosis (foul breath), regurgitation with cough and aspiration pneumonia (Bilateral Lung Crepts) suggests a diagnosis of Zenker's Diverticulum.