Many people avoid processed food to eliminate unnecessary ingredients like food dyes and excess sodium from their diets. A study calculated that every 70.0 g serving of a certain brand of Mac & Cheese contains 260 calories, 3 g of fat, 16 g of carbohydrates, 9 g of protein, 570 mg of sodium, and 17.6 mg of food dyes. What is the mass percent of sodium in the Mac & Cheese? A) 0.814% B) 12.3% C) 25.1% D) 45.6%