Consider the Regression Equation: R_i - R_f = G₀

Consider the regression equation: r_i - r_f = g₀ + g₁b_i + e_it
where:
R_i - r_f = the average difference between the monthly return on stock i and the monthly risk-free rate
B_i = the beta of stock i
This regression equation is used to estimate

A) the benchmark error.
B) the security market line.
C) the capital market line.
D) the benchmark error and the security market line.