5 Determine the retirement savings contributions credit in each of the following independent cases. Use Table 9-2. 20 points Answer is complete but not entirely correct. Retirement Savings Contributions Credit a. A married couple filing jointly with modified AGI of $37,500 and IRA contribution of $1,600. 800 O b. A married couple filing jointly with modified AGI of $58,000 RA contribution of $1.500 $ 150 O c. A head of household taxpayer with modified AGI of $33,000 and Roth IRA contribution of $2.000 d. A single taxpayer with modified AGI of $12,000 and an IRA contribution of $2,300 $ 200 - $ 1.150