56.72% C 17.72% Question 24 8.57 pts Which of the following is not true? C If a stock achieve the same return each year for 6 years, then the arithmetic average return of the stock will be equal to the geometric average return of the stock. If a market is efficient, it means an investor cannot make any profit by investing in that market. C None of the above all of the above are true. Treasury bills are generally considered to be risk-free. Question 25 8.57 pts A stock has average return of 12.3 percent and standard deviation of returns of 22.8 percent