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: Pathology
Predisposing factors for Esophagus Ca- 
Select and explain. 
A. Tylosis, B. Achalasia, C. Barrett's esophagus, D. All
D: All
Answer: D: All 
Explanation: Ans. is 'a' i.e., Tylosis; 'b' i.e., Achalasia & 'c' i.e., Barrett's esophagus