What is the primary difference between Social Security and Supplemental Security Income (SSI) beneficiaries?
A) Social Security benefits are primarily for retirees and those with disabilities based on their work history, while SSI benefits are for individuals with limited income and resources, regardless of their work history.
B) Social Security benefits are only for individuals over the age of 65, while SSI benefits are for children under 18.
C) Social Security and SSI benefits are both exclusively available to individuals with a high income.
D) Social Security benefits are determined by state governments, while SSI benefits are determined by federal agencies.