Consider the following information: State of Probability of State Rate of Return if State Occurs Economy of Economy Stock A Stock B Stock C Boom .69 .12 .06 .27 Bust .31 .16 .22 – .07 a. What is the expected return on an equally weighted portfolio of these three stocks? b. What is the variance of a portfolio invested 24 percent each in A and B and 52 percent in C?