Required information [The following information applies to the questions displayed below.] In 2021, Juanita is married and files a joint tax return with her husband. What is her tentative minimum tax in each of the following alternative circumstances? Use Tax Rate Schedule, Dividends and Capital Gains Tax Rates for reference. (Input all values as positive. Leave no answer blank. Enter zero if applicable.) a. Her AMT base is $129 , 000 , all ordinary income. b. Her AMT base is $447 , 500 , all ordinary income. c. Her AMT base is $129 , 000 , which includes $21 , 200 of qualified dividends. d. Her AMT base is $447 , 500 , which includes $21 , 200 of qualified dividends