Over the past 75 years, we have observed that investments with higher average annual returns also tend to have the highest standard deviations in their annual returns. This observation supports the notion that there is a positive correlation between risk and return. Which of the following lists correctly ranks investments from having the highest returns and risk to those with the lowest returns and risk? （ ）
选项：

A:Small-company stocks, large-company stocks, long-term corporate bonds, long-term government bonds, U.S. Treasury bills.
B:Small-company stocks, long-term corporate bonds, large-company stocks, long-term government bonds, U.S. Treasury bills.
C:Large-company stocks, small-company stocks, long-term corporate bonds, U.S. Treasury bills, long-term government bonds.
D:U.S. Treasury bills, long-term government bonds, long-term corporate bonds, small-company stocks, large-company stocks.
E:Large-company stocks, small-company stocks, long-term corporate bonds, long-term government bonds, U.S. Treasury bills.