Christine is a full-time fourth-grade teacher at Vireo Academy. During the current year, she spends $1,400 for classroom supplies. On the submission of adequate substantiation, Vireo reimburses her for $500 of these expenses—the maximum reimbursement allowed for supplies under school policy. [The reimbursement is not shown as income (Box 1) of Form W–2 given to Christine by Vireo.]
What are the income tax consequences of the $1,400 if Christine:

a. Itemizes her deductions from AGI?
b. Chooses the standard deduction?