Which Statement Best Describes the Healthful Diet Principle of Moderation

Which statement best describes the healthful diet principle of moderation?

A) Choose a number of different foods within any given food group rather than the "same old thing."
B) Consume a variety of foods from MyPyramid's five major food groups every day.
C) Plan your entire day's diet so that you don't overconsume nutrient sources.
D) Consume foods that have the most nutrition for their kcalories.