As a health economist for the U.S. Centers for Disease Control and Prevention, you have been asked to analyze a number of programs targeting different diseases and recommend which should receive priority, given that the budgets are limited. As part of your analysis, you will have to determine what interest rate is appropriate for discounting future costs and benefits. You are going to be visited by an economist from the AARP (formerly American Association of Retired Persons), and another economist from the Childrens Defense Fund. Which group will lobby for a lower discount rate? Why?