This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diagnostic Evaluation of the Esophagus, Subject name: Surgery
A 58-year-old male patient presents with halitosis, mild dysphagia and regurgitation of previous day food. On radiological examination this is the presentation of the patient, where is the location of this presentation? 
Select and explain. 
A. Anterior segment of the esophagus along superior pharyngeal constrictor muscle, B. Posterior segment of the esophagus along superior pharyngeal constrictor muscle, C. Anterior segment of the esophagus along inferior pharyngeal constrictor muscle, D. Posterior segment of the esophagus along inferior pharyngeal constrictor muscle
D: Posterior segment of the esophagus along inferior pharyngeal constrictor muscle
Answer: D: Posterior segment of the esophagus along inferior pharyngeal constrictor muscle 
Explanation: Ans. (d) Posterior segment of the esophagus along inferior pharyngeal constrictor muscle.Zenker's diverticulum is not really an esophageal diverticulum as it protrudes posteriorly above the cricopharyngeal sphincter through the natural weak point (the dehiscence of Killian) between the oblique and horizontal (cricopharyngeus) fibers of the inferior pharyngeal constrictor. This leads to halitosis and esophageal dysphagia.Image Source- style="font-family: Times New Roman, Times, serif">