Which Statement Describes a Characteristic of Food Serving Sizes

Which statement describes a characteristic of food serving sizes?

A) Serving sizes for most foods have not yet been established by the FDA
B) The serving size for ice cream is 2 cups and the serving size for all beverages is 12 fluid ounces
C) Serving sizes on food labels are not always the same as those of the USDA Food Patterns
D) Serving sizes must be listed in common household measures, such as cups, or metric measures, such as milliliters, but not both
E) Manufacturers are free to set their own serving sizes as long as they specify what the serving size is.