The Variance Of $Y _ { i }$ Is Given by
A)

Multiple Choice

The variance of $Y _ { i }$ is given by

A) $\beta _ { 0 } ^ { 2 } + \beta _ { 1 } ^ { 2 } \operatorname { var } \left( X _ { i } \right) + \operatorname { var } \left( u _ { i } \right)$
B) $\text { the variance of } u _ { i }$
C) $\beta _ { 1 } ^ { 2 } \operatorname { var } \left( X _ { i } \right) + \operatorname { var } \left( u _ { i } \right)$
D) the variance of the residuals.