stuck on C any idea?

Neville and Julie are married and have two children ages 19 and 14. Their adjusted gross income for the year is $85,000. Round all calculations up to the next whole number. a. Neville and Julie can claim $ 2,000 as a child credit. Feedback Check My Work The child credit provides tax relief to taxpayers with children under a certain age. There is a phase out as income increases. b. They can claim $ 4,000 for the child credit if their children are ages 16 and 13. Feedback Check My Work Correct c. Assume the same facts as part a except that their adjusted gross income is $416,400. Neville and Julie are allowed a child credit of 108 x . Their child credit is reduced by 216,400 X due to their adjusted gross income. Feedback