Watch one of the collapse concerning the expected rate of return on an individual stock given various states of the economy? Select one: a. As long as the total probabilities of the economic states equal 100 percent, then the expected return on the stock is a geometric average of the expected returns for each economic state. b. The expected return is a weighted average where the probabilities of the economic states are used as the weights c. The expected return is equal to the summation of the values computed by dividing the expected return for each economic state by the probability of the state d. The expected return is a geometric average where the probabilities of the economic states are used as the exponential powers