In 1988, when Sherry was 55 years old with an additional life

In 1988, when Sherry was 55 years old with an additional life expectancy of 20 years, she,purchased a single life annuity for $200,000 that was to pay her $15,000 per year for life,starting in 1989. Sherry just received her $15,000 payment for 2011. How much of the,$15,000 must Sherry include in income?,a. 0,b. $5,000,c. $10,000,d. $15,000