Suppose you borrow​ $2,000 for one year and at the end of the year you repay the​ $2,000 plus​ $110 of interest. If the expected inflation rate was​ 2.2% at the time you took out the​ loan, what was the real interest rate you​ paid?
a. 2.2%
b. 3.3%
c. 5.5%
d. 8.8%