Consider the following information: Rate of Return if State Occurs State of Economy Boom Bust Probability of State of Economy 0.66 Stock A 0.05 0.15 Stock B 0.27 0.17 Stock C 0.31 0.11 0.34 a. What is the expected return on an equally weighted portfolio of these three stocks? b. What is the variance of a portfolio invested 20 percent each in A and B and 60 percent in C