Which correctly matched macronutrient group with energy content in kcal/gram?

a) Carbohydrates 9, Proteins 4, Fats 9
b) Carbohydrates 4, Proteins 4, Fats 4
c) Carbohydrates 4, Proteins 4, Fats 9
d) Carbohydrates 4, Proteins 9, Fats 4