Which snack has the fewest calories?
a. A meal with 1 gram of carbohydrates, 1 gram of fat, and 2 grams of protein
b. A meal with 6 grams of carbohydrates and 1 gram of protein
c. A meal with 5 grams of fat, 1 gram of carbohydrates
d. A meal with 10 grams of protein