5 9 points Determine the amount of the child tax credit in each of the following cases: Answer is complete but not entirely correct. Child Tax Credit Allowed a. A single parent with modified AGI of $213,700 and one child age 4. $ 1,300 b. A single parent with modified AGI of $78,300 and three children ages 7, 9, and 12. c. A married couple, filing jointly, with modified AGI of $408,233 and two children age 14 and 16. d. A married couple, filing jointly, with modified AGI of $132,355 and one child, age 13. $ 1,900 $ 1,775 x $ 1,300