A Controversial Element of the Social Security Program Is That

A controversial element of the Social Security program is that

A) participation is mandatory.
B) the Social Security payments are withheld dollar for dollar.
C) to collect any Social Security benefits, workers must retire at 65.
D) it is run strictly like an ordinary insurance system that ties the level of benefits directly to the amount of an individual's contributions.
E) the Social Security tax is progressive.