An Implication Of Is That
A) $\hat { \beta } _ { 1 } \text { is unbiased. }$

An implication of $\sqrt { n } \left( \hat { \beta } _ { 1 } - \beta _ { 1 } \right) \stackrel { d } { \rightarrow } N \left( 0 , \frac { \operatorname { var } \left( v _ { i } \right) } { \left[ \operatorname { var } \left( X _ { i } \right) \right] ^ { 2 } } \right)$ is that

A) $\hat { \beta } _ { 1 } \text { is unbiased. }$
B) $\hat { \beta } _ { 1 } \text { is consistent }$
C) OLS is BLUE.
D) there is heteroskedasticity in the errors.