Answer:
$2,500
Step-by-step explanation:
The education credit limit is pegged at $2,500 incurred on expenses that are directly connected to enrollment , attendance and other educational activities like tuition , textbooks
The expenses must have been incurred in the tax year or within the first three months of the following tax year.
Although all expenses are related to David's education , but she the can not claim more than the $2500 which is the upper limit.