Which of the following describes the main difference between energy that comes from simple foods (such as sugar or candy) and those that are complex (such as oatmeal)? A. Simple foods are less harsh on the digestive system; therefore, simple foods are easier to digest. B. The body prefers simple foods because they provide more energy than complex foods. C. Complex foods need more cooking time; therefore, they're less nutritious than simple foods. D. It takes time and energy for your body to break down more complex foods, whereas simple foods are broken down more quickly.