According to the table below, if you invested 40 percent of the portfolio in Stock A and 35 percent in Stock B and 25 percent in Stock C, what is the standard deviation of the returns on the portfolio? Rate of Return if State Occurs State of EconomyState Occurring Growth Stagnant 16.57 percent Probability of Stock A Stock B Stock C 07 18.9 10.2 12.1 93 5.7 8.5 9.3 3.16 percent 6.72 percent 2.43 percent 1.68 percent