Capital market history shows us that a correct ordering of the average arithmetic mean return for asset classes, from lowest to highest, is:

a. U.S. Treasury bills, long-term government bonds, intermediate-term government bonds, small-company stock.

b. U.S. Treasury bills, government bonds, corporate bonds, large-company stocks.

c. U.S. Treasury bills, small-company stocks, large-company stocks, government bonds.

d. corporate bonds, U.S. Treasury bills, small-company stocks, large-company stocks.

e. government bonds, U.S. Treasury bills, large-company stocks, small-company stocks.