单项选择题

Jaun plans to give $5,000 to the American Diabetes Association.Jaun's marginal tax rate is 24%.His average tax rate is 21%.Jaun, who itemizes his deductions, has an after-tax cost of the contribution of()
A、$3,250
B、$3,400
C、$3,800
D、$3,950
E、$5,000

A.Jaun's
B.His
C.Jaun,
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