4 0/1 point Which of the following statements concerning the Social Security system is (are) correct? 1. To qualify for retirement benefits, a worker must be "fully insured," which means that a worker has earned a certain number of quarters of coverage under the Social Security system. 2. Earning a specific amount of money, regardless of when it was earned during the year, will credit the worker with a quarter of coverage for that year. 1 only. O Neither 1 nor 2. O Both 1 and 2. 2 only