In: Accounting
The correct answer is c.exclude $28,000 from her gross income
As per IRS Topic No. 421 "Scholarships, Fellowship Grants, and Other Grants":
"If you receive a scholarship, a fellowship grant, or other grant, all or part of the amounts you receive may be tax-free. Scholarships, fellowship grants, and other grants are tax-free if you meet the following conditions:
However, amounts used for incidental expenses, such as room and board, travel, and optional equipment are not excludable and will therefore be taxable.