Determine the retirement savings contributions credit in each of the following cases. Use Table 9-2 Retirement Savings Contributions Credit a. A married couple filing jointly with modified AGI of $37,500 and an IRA contribution of $1,740. b. A married couple filing jointly with modified AGI of $58,000 and an IRA contribution of $1,780. C. A head of household taxpayer with modified AGI of $33,000 and Roth IRA contribution of $1,930. d. A single taxpayer with modified AGI of $12,000 and an IRA contribution of $2,650. TABLE 9-2 Rates for Retirement Savings Contributions Credit Modified Adjusted Gross Income Applicable Percentage Joint Return Head of Household All Other Filing Status Over Not Over Over Not Over Over Not Over $ 0 $ 0 $ 29,250 $ 0 50% $ 39,000 42,500 65,000 31.875 39,000 42,500 65,000 20% 29,250 31,875 $ 19,500 21,250 32,500 19,500 21,250 32.500 48,750 10% 48,750 0%