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: Social & Preventive Medicine
Corn flakes is classified as which grade of glycemic index: 
Select and explain. 
A. Very low, B. Low, C. High, D. Medium
C: High
Answer: C: High 
Explanation: classification GI range Example Low GI 55 or less Most fruits and vegetables except potatoes and water melon, pasta beans, lentils Medium GI 56-69 Sucrose, brown rice, basmati rice High GI 70 or more Corn flakes, white bread, candy bar Ref: Park 22nd edition, page 568