1. Based on the table above, what is the proportion of the total risk for BIIB that can be explained by the market driven risk?

A. 54%

B. 48%

C. 18%

D. 7%

S&P 500 CCE MMM BIB Average St. Dev. Variance 1.55% 3.12% 0.000973 1.64% 8.90% 0.007928 1.06% 2.32% 9.26% 7.56% 0.008569 0.005711 Intercept Beta Var of Residuals From Regression Results 0.0024 -0.0015 0.0031 0.65 1.45 1.02 0.007517 0.006522 0.004698 S&P 500 CCE MMM BIB Average St. Dev. Variance 1.55% 3.12% 0.000973 1.64% 8.90% 0.007928 1.06% 2.32% 9.26% 7.56% 0.008569 0.005711 Intercept Beta Var of Residuals From Regression Results 0.0024 -0.0015 0.0031 0.65 1.45 1.02 0.007517 0.006522 0.004698