Physiology General 1dc9b6c6 In the following food items, which one has the highest 'Glycemic Index' A Corn - flakes B Brown rice C Ice - cream D Whole wheat bread High-Yield Explanation Glycemic index : Corn flakes - 80 - 90. Whole wheat bread - 70 - 79. Brown rice - 60 - 69. Ice cream - <40.