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
Based on Epidemiological studies, all the following factors ours the development of colon cancer, except: 
Select and explain. 
A. High fiber diet, B. Low fat diet, C. Low selenium diet, D. Low protein diet
A: High fiber diet
Answer: A: High fiber diet 
Explanation: Insoluble fibres was found to decrease cell proliferation. Lignin a component of insoluble fiber is a free radical scavenger and was found to protect against colorectal cancer. Ref: Functional Foods, Ageing and Degenerative Disease By Claude Remacle, Brigitte Reusens, Page 634; Medical Care of Cancer Patients By Sai-Ching Jim Yeung, Page 296; Nutrition In The Prevention and Treatment of Disease By Ann M. Coulston, Carol Boushey, Page 68; Colorectal Cancer: A Scientific Perspective By Anne R. Kinsella, Page 41