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
Turcot's syndrome is associated with -a) Duodenal polypsb) Familial adenomatous polyposisc) Brain tumorsd) Villous adenomae) Hyperplastic polyps 
Select and explain. 
A. a, B. c, C. bc, D. ad
C: bc
Answer: C: bc 
Explanation: Turcot's syndrome is a variant of Familial adenomatous polyposis characterized by
- Colorectal polyposis
- Brain tumors (Medulloblastoma, Glioblastoma multiforme)
The colonic polyps in Turcot's syndrome are fewer and larger than in classic FAP.