Assume that the variance depends on a third variable, Wi, which does not appear in the regression function, and that var(ui|Xi,Wi)= θ0+θ1 One way to estimate θ0

Assume that the variance depends on a third variable, Wi, which does not appear in the regression function, and that var(ui|Xi,Wi)= θ0+θ1 One way to estimate θ0 and θ1consistently is to regress
A) i on using OLS
B) i on using OLS
C) on using OLS
D) on using OLS