Many government payments and policies are tied to the consumer price index (CPI). The most important of these are Social Security payments, which represent nearly 25% of total federal spending. Suppose that Erin currently receives Social Security payments and will continue to receive them next year. If the CPI rises by 2.3% this year, then next year the payment in each of Erin's Social Security payments will be than this year's payments by percent. Suppose that the government wants to index a tax credit given to manufacturers by a common price index. Which one of the following choices would most closely match changes in the costs of operating manufacturing businesses? O The hedonic price index O The consumer price index (CPI) O The GDP deflator The producer price index (PPI)