As a college student, you are trying to be healthy and Calorie conscious by making yourself a lettuce and tomato sandwich for supper. After making the sandwich, you decide it needs something extra. In the store, you find bacon (20 g of fat), lean chicken (20 g of protein), or sprouts (20 g of carbohydrates) that you would add. Which of these would provide the lowest Calorie count for your sandwich?
