Which of the following statements are true in regard to social security?

A. Social security is an optional insurance program administered by the federal government
B. It provides support in the event of death, disability, health problems, or retirement
C. The tax rate is 6.2% of gross salary up to the social security wage base that adjusts for inflation each year ($147,000 in 2022)
D. OASDI tax stands for Old Age, Survivors, and Disability insurance