Over the period of 1926-2011, which one of the following investment classes had the lowest volatility of returns? 1) U.S. Treasury bils o 2) Large-company stocks 3) Small-company stocks D4) Long-term government bonds 5) Long-term corporate bonds d View Feedback 0 /1 point uestion 14 Mann is a chemist for ABC, a major drug manufacturer. Mann earn excess profits by trading ABC stock based on the knowledge he has related to his experiments if the financial markets are: 1) aware that the trader is an insider. 2) weak form efficient. 3) efficient at any level. 4) semistrong form efficient 5) strong form efficient.