Unlike the Negative Income Tax Proposal,which Was an Income Transfer

Unlike the negative income tax proposal,which was an income transfer proposal,Social Security is a popular program because it

A) is an insurance system and not an income transfer program.
B) does not require a large bureaucracy to administer.
C) deals with the symptoms rather than the causes of old age.
D) applies to everybody; young workers who pay the taxes to support those currently receiving payments will someday be elderly and expect to receive the transfers themselves.
E) provides training for retired individuals who want to work part-time.