What Is the Difference Between the Medicare Program and the Medicaid

What is the difference between the Medicare program and the Medicaid program?

A) Medicare was introduced by President Johnson, whereas Medicaid was established by President Roosevelt.
B) Medicare provides health insurance to the elderly, while Medicaid provides health care services to the poor.
C) Medicare is funded through taxpayer money, whereas Medicaid is a private health insurance service.
D) Medicare provides physician services to the poor, while Medicaid provides health care for the elderly.