Problem: George's Gameroom had two employees with the following earnings information: Cumulative Gross Earnings Earnings as of for Week Ending Employee 11/30/20X1 12/15/20X1 Barbara Brown $ 5, 200 $ 1, 880 Hillary Adams $ 138, 800 $ 6, 400 Use the table above and calculate how much of Hillary's December 15 paycheck is still subject to Social Security tax given that the tax is levied on the first $142,800 of annual wages and the Medicare tax rate is 1.45% on all earnings. Multiple Choice $1,600 $2,800 $4,000 $6.400