Assume the probability of a pessimistic, most likely , and optimistic state of the economy is 25%, 45%, and 30%, and the returns associated with those states of nature are 10%, 12%, and 16% for asset X. based on this information, the expected return and standard deviation or return are: a. 12.0% and 4.0% b. 12.7% and 2.3% c. 12.7% and 4.0% d. 12.0% and 2.3% e. none of the above