An endurance athlete consumes 3,000 kcal/day. Calculate the lower-bound AMDR grams for carbohydrates (45% of calories) and state whether this lower-bound exceeds the RDA of 130 g/day. Show work.

• A. Lower-bound AMDR = 337.5 g; yes, it far exceeds the 130 g RDA
• B. Lower-bound AMDR = 135 g; this is approximately equal to the RDA and therefore not higher
• C. Lower-bound AMDR = 500 g; this number is less meaningful than the RDA and should not be compared
• D. Lower-bound AMDR cannot be calculated without knowing the athlete's body weight in kg, and therefore no comparison is possible

Answer: (A)