Determine the amount of the child tax credit in each of the following cases: Child Tax Credit Allowed a. A single parent with modified AGI of $213,400 and one child. b. A single parent with modified AGI of $77,058 and three children. c.|Amarried couple, filing jointly, with modified AGI of $407,933 and two children. Determine the amount of the child tax credit in each of the following cases: Child Tax Credit Allowed a. A single parent with modified AGI of $213,400 and one child. b. A single parent with modified AGI of $77,058 and three children. c.|Amarried couple, filing jointly, with modified AGI of $407,933 and two children