Consider the following information for three stocks, a, b, and c. The stocks' returns are positively but not perfectly positively correlated with one another, i. E. , the correlations are all between 0 and 1. Expected standard stock return deviation beta a 10% 20% 1. 0 b 10% 10% 1. 0 c 12% 12% 1. 4 portfolio ab has half of its funds invested in stock a and half in stock b. Portfolio abc has one third of its funds invested in each of the three stocks. The risk-free rate is 5%, and the market is in equilibrium, so required returns equal expected returns. Which of the following statements is correct?.