The Historical Record for the Period 1926-2011 Shows That the Annual

The historical record for the period 1926-2011 shows that the annual nominal rate of return on:

A) risk-free securities has averaged around 5 percent.
B) the Consumer Price Index has been positive every year.
C) U.S. Treasury bills have had a positive rate of return for every year in the period.
D) U.S. Treasury bills is constant.
E) large company stocks has averaged around 9 percent.