Answer:
a. Yes, Celia is eligible to claim the tuition and fees deduction. Her allowable deduction is $3,875.
Explanation:
Since Celia's MAGI is less than $80,000 (assuming she is a single filer or head of household), she can claim up to $2,000 per year on each of her children's qualified tuition expenses. In this case, Celia can claim $2,000 from her son's tuition expenses and $1,875 form her daughter's.