d. Why is the amount of interest eamed in part (a) less than half the amount of interest eamed in part (b)? O A. The annual interest rate in part(b) is slightly higher than the rate assumed in part (a). This is because of compounding B. The amount of interest earned in part (a) is really half of the amount of interest comed in part (b) since in part (b) the money grows for twice as many years as in part (a) c. The interest eamed in part (a) is based on a lower effective annual interest rate. d. Why is the amount of interest eamed in part (a) less than half the amount of interest eamed in part (b)? O A. The annual interest rate in part(b) is slightly higher than the rate assumed in part (a). This is because of compounding B. The amount of interest earned in part (a) is really half of the amount of interest comed in part (b) since in part (b) the money grows for twice as many years as in part (a) c. The interest eamed in part (a) is based on a lower effective annual interest rate