Edwina worked at three jobs during 2011. She earned 30,000, 40,000 and 9,000 respectively form the jobs and had 10,000 from self-employment income. What amount can Edwina apply as credit against her 2011 income tax liability for overpayment of FICA taxes?
a. 765
b. 6,808
c. 1,291
d. 6,622
e. None
Could you also show me the work so that I can understand how to figure out future problems.