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: Medicine
Babu, a 49-year-old patient, complains of foul breath and regurgitation of food eaten few days back. He also complains of dysphagia. The probable diagnosis is: 
Select and explain. 
A. Gastrophoresis, B. Achalasia, C. Diabetes, D. Pharyngeal pouch
D: Pharyngeal pouch
Answer: D: Pharyngeal pouch 
Explanation: None