A stock had returns of 14.2 percent, 11 percent, -2.8 percent, -5.7 percent, -6.3 percent, and 12 percent over the past six years. What is the geometric average roturn for this time period? 35 Instruction: Enter your response as a percentage with two deciral places. For example, if your answer is 0.1213=12.13%, please only enter " 12.13 ", please do not enter " 0.1213 " or " 12.13%; the system may not recognize the x sign. You fuy put negative signs if necessary