The textbook provides a history of returns from 1950 through 1999 for four classifications of securities in the United States. Rank the average standard deviation ( measure of risk) from the highest to lowest over this time period. O A. Large - company stocks, long-term government bonds, small - company stocks, 3-month U.S. Treasury bills OB. Small-company stocks, large - company stocks, long-term government bonds, 3-month U.S. Treasury bills O C. Long-term government bonds, 3-month U.S. Treasury bills, small - company stocks, large - company stocks OD. Large - company stocks, small - company stocks, 3 - month U.S. Treasury bills, long-term government bonds