If All Citizens Who Are 65 Years and Older Are

If all citizens who are 65 years and older are eligible for Medicare,but only some citizens are eligible for Medicaid because they lack certain resources,which of the following is also true?

A) Both Medicare and Medicaid are principally retirement programs.
B) Both Medicare and Medicaid are means-tested programs.
C) Medicare is an entitlement program,but Medicaid is a means-tested program.
D) Medicare is a means-tested program,but Medicaid is an entitlement program.