Julien and Sarah are married, file a joint return with AGI of $126,000, and have two dependent children, Kaya and Christopher. Kaya just finished her third year at college and Christopher just finished his first year of graduate school (fifth year of college). Qualified education expenses for 2019 were $4,000 for Kaya and $5,000 for Christopher.

Compute the following amounts for Julien and Sarah's education credits for 2019 :

a: American Opportunity Credit before any phaseout

b: American Opportunity Credit after any phaseout

c: Lifetime Learning Credit before any phaseout

d: Lifetime Learning Credit after any phaseout

e: Total education credits they can claim