Recently, the annual inflation rate measured by the Consumer Price Index (CPI) was forecast to be 3.3%.

Question:

Recently, the annual inflation rate measured by the Consumer Price Index (CPI) was forecast to be 3.3%. How could a T-bill have had a negative real rate of return over the same period? How could it have had a zero real rate of return? What minimum rate of return must the T-bill have earned to meet your requirement of a 2% real rate of return?