Walt and Deloris, who file a joint return, have two dependent children, Bill and Tiffany. Bill is a freshman at Stare University and Tiffany is working on her graduate degree. The couple paid qualified expenses of $2,700 for Bill (who is a half-time student) and j$6,600 for Tiffany. A. What educational tax credits are available if Walt and Deloris report modified AGI of $113,800? what is amount of credit Bill and Tiffany get? on Lifetime learning credit, and American Opportunity Tax Credit. B. What educational tax credit are available if Walt and Deloris report modified AGI of $113,800 and Tiffany is taking one class a semester (is less than a half-time student) and not taking classes is degree program?