Problem 8-10 Suppose that the index model for stocks A and B is estimated from excess returns with the following results: RA = 2.6% + 0.90RM + CA RB = -2.0% + 1.2RM + EB OM = 26%; R-squarea = 0.21; R- squares 0.12 Break down the variance of each stock to the systematic and firm-specific components. (Do not round intermediate calculations. Calculate using numbers in decimal form, not percentages. Round your answers to 4 decimal places.) Risk for A Risk for B Systematic Firm-specific