Ariana and John, who file a joint return, have two dependent children, Kai and Angel. Kai is a freshman at State University and Angel is working on her graduate degree. The couple paid qualified expenses of 3,600 for Kai (who is a half-time student) and $6,700 for Angel. Required: What are the amount and type of education tax credits that Ariana and John can take, assuming they have no modified AGI limitation?