14. During the tax year, Taxpayer cashed in Series EE savings bonds with a redemption value of $18,000 and an original cost of $7,600. Taxpayer, whose Modified Adjusted Gross Income is below the beginning of the phase-out range, spent $10,800 on his dependent child's tuition during the year. Determine the amount taxpayer must include in gross income as a result of the redemption. a. 10,800 c. 4,160 b. 6,240 d. O