7. (8 points) Rick and Lucy are a married couple with one child. Rick earns $60,000 per year, and Luck also earns $60,000 per year, for a combined household adjusted gross income of $120,000. Jack and Diane are also a married couple with one child and also earn $120,000 in combined household adjusted gross income. However, Diane earns all of the income and Jack earns nothing. Note: to answer the following questions, you will need to use the tax brackets in the table below. Suppose the standard deduction for unmarried individuals is $10,000 and the standard deduction for married individuals filing jointly is $20,000. Rate 10% 15% 20% 25% 30% For Unmarried individuals, Taxable income From 0 - 10,000 10,000 - 50,000 50,000 -100,000 100,000 - 200,000 200,000+ For Married Individuals Filing Joint Returns, Taxable income Over 0 - 20,000 20,000 - 80,000 80,000 - 150,000 150,000 - 300,000 300,000+ a. Both couples take the standard deduction, and also claim a $2,000 child tax credit. Use the above tax rates for married couples filing jointly to compute how much income tax each couple owes. Show your work. b. Does either couple pay a marriage tax, and, if so, how much? How about a marriage subsidy? If one or both couples do pay a marriage tax or receive a marriage subsidy, explain why based on the features of the tax system