In 2018, Elaine paid $2,760 of tuition and $1,060 for books for her dependent son to attend State University this past fall as a freshman. Elaine files a joint return with her husband. What is the maximum American opportunity credit that Elaine can claim for the tuition payment and books in each of the following alternative situations? What is the American Opportunity Credit if: a. Elaines AGI is $92,750. b. Elaines AGI is $164,500. c. Elaines AGI is $211,000.