27. The normal distribution is a theoretical distribution for a population. The distribution can be used to estimate how risky a cashow or return is. If the mean is 12% and the standard deviation is 22.6%, What is the range of possible returns for a 2 standard deviation change and What percentage of all observations would fall Within 2 standard deviations. A. 24%, 68%. B. 24%, 96%. C. 90%, 68%. D. 90%, 96%