Which of the following is true about "Age Banding" and "The Prosperous Retirement" methodology?

A. "The Prosperous Retirement" Is based on spending in categories at different ages and "Age Banding" is based on spending behavior during retirement decades.
B. Subsequent research into the actual spending patterns amongst retirees across each age band does not support the age banding hypothesis.
C. "The Prosperous Retirement" is based on spending behavior during retirement decades and "Age Banding" is based on spending in categories at different ages.
D. Neither the BLS’ Consumer Expenditure Survey nor the RAND Health and Retirement Study (HRS) supports the idea that retiree spending does not remain stable throughout retirement.