Which of the following statements is not true?
a. infants' diets, which primarily consist of breast milk or formula, are higher in fat than other diets.
b. adolescents need more calories and nutrients, especially if they are very inactive.
c. adults' activity levels tend to decline in age, which require a reduction in the amount of calories consumed.
d. children who are two years or older can follow the recommendations of the food guide pyramid.