The probability the economy will boom is 20 percent, while it is 70 percent for a normal economy, and 10 percent for a recession. Stock A will return 18 percent in a boom, 11 percent in a normal economy, and lose 10 percent in a recessionStock B will return 9 percent in boom, 7 percent in a normal economy, and 4 percent in a recession. Stock C will return 6 percent in a boom, 9 percent in a normal economy, and 13 percent in a recession. What is the expected return on a portfolio which is invested 20 percent in Stock A, 50 percent in Stock B and 30 percent in Stock C?