Need assistance with the rest of part a and b. Thanks.

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.

1. What education tax credits are available if Walt and Deloris report modified AGI of $123,700?
2. What education tax credits are available if Walt and Deloris report modified AGI of $123,700 and Tiffany is taking one class a semester (is less than a half-time student) and not taking classes in a degree program?

Required a Required b what education tax credits are available if Walt and Deloris report modified Age of $123,700? (Do not round intermediate calculations. Round your final answers to the nearest whole dollar amount.) Dependent Amount of Credit Type of Credit Bill Tiffany AOTC Lifetime learning credit 0 Total $ Required a Required b What education tax credits are available if Walt and Delori semester (is less than a half-time student) and not taking calculations. Round your final answers to the nearest who Dependent Bill Tiffany Total Amount of Credit Type of Credit 2,475 AOTC Lifetime learning credit $ 2,475