Which of the following is the requirement for an individual to qualify for full retirement benefits under the Social Security system?

a.The individual must be employed in a job covered by Social Security for at least 50 consecutive quarters, or 12.5 years.b.The individual must be employed in a job covered by Social Security for at least 50 quarters, or 12.5 years, which need not be consecutive.c.The individual must be employed in a job covered by Social Security for at least 60 quarters, or 15 years, which need not be consecutive.d.The individual must be employed in a job covered by Social Security for at least 40 quarters, or 10 years, which need not be consecutive.e.The individual must be employed in a job covered by Social Security for at least 40 consecutive quarters, or 10 years.