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: Surgery
Esophageal carcinoma is not  predisposed by 
Select and explain. 
A. Achalasia, B. Scleroderma, C. Corrosive intake, D. barrett's oesophagus
B: Scleroderma
Answer: B: Scleroderma 
Explanation: common predispositions in developing carcinoma oesophagus includes,
*human papillomavirus infection
*achalasia cardia (30%)
*oesophageal webs (25%)
*Barrett's oesophagus and also Plummer Vinson syndrome, tylosis, corrosive strictures, and nitrosamines.