Which of the following, if true, most undermines the school officials' plan? A. Unsweetened fruit juices contain more sugar than does bottled water. B. Many students have access to sugary drinks both before and after school. C. Sugar-free sodas contain artificial sweeteners that some medical officials link to headaches and other health concerns. D. Sugary snack foods comprise the majority of sales in school vending machines. E. The average school-aged child consumes two twenty-ounce sugary drinks every day.