A stock had annual returns of 5.1 percent, 12.2 percent, -3.8 percent, and 9.4 percent for the past four years. The arithmetic average of these returns is percent while the geometric average return for the perlod is percent: 5.73;5.06 5,73;5,55 5.91:5.74 5.91;5.62 5.73;8.92