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
Which is not pre-malignant at some site - 
Select and explain. 
A. Bronchiectasis, B. Cholilithiasis, C. Ulcerative colitis, D. Leukoplakia
A: Bronchiectasis
Answer: A: Bronchiectasis 
Explanation: Bronchiectasis is not a premalignant condition.

Cholelithiasis predisposes to carcinoma Gallbladder
Ulcerative colitis predisposes to :          

(a) colorectal cancer-Sabiston 16th/ep. 953
(b) cholangiocarcinoma.

Leukoplakia: Predisposes to squamous cell carcinoma at the respective site.