Corey deposits $1,000 in a savings account that pays an annual interest rate of 5 percent. Over the course of a year, the inflation rate is 1.7 percent. At the end of the year, Corey has

a. $17 more in his account, and his purchasing power has increased by $10.
b. $30 more in his account, and his purchasing power has increased by $50.
c. $40 more in his account, and his purchasing power has increased by $33.
d. $50 more in his account, and his purchasing power has increased by $33.

d