Walt and Deloris, who file a joint return, have two dependent children, Bill and Tiffany. Bill is a freshman at State University, and Tiffany is working on her graduate degree. The couple paid qualified expenses of $3,900 for Bill (who is a half-time student) and $7,800 for Tiffany. Required: a. What education tax credits are available if Walt and Deloris report modified AGI of $119,700? b. What education tax credits are available if Walt and Deloris report modified AGI of $119,700 and Tiffany is taking one class a semester (is less than a half-time student) and not taking classes in a degree program? Complete this question by entering your answer in the tabs below. Required a Required b What education tax credits are available if Walt and Deloris report modified AGI of $119,700? (Do not round intermediate calculations. Round your final answers to the nearest whole dollar amount.) Dependent Amount of Credit Type of Credit Bill Tiffany Total Complete this question by entering your answer in the tabs below. Required a Required b What education tax credits are available if Walt and Deloris report modified AGI of $119,700 and Tiffany is taking one class a semester (is less than a half-time student) and not taking classes in a degree program? (Do not round intermediate calculations. Round your final answers to the nearest whole dollar amount.) Dependent Amount of Credit Type of Credit Bill Tiffany Total