(Solved): Which of the following is true of the OLS t statistics? The usual t statistics do not have exact t ...

Which of the following is true of the OLS $t$ statistics? The usual $t$ statistics do not have exact $t$ distributions if the sample size is large. In the presence of homoscedasticity, the usual $t$ statistics do not have exact $t$ distributions if the sample size is small. The heteroskedasticity-robust $t$ statistics are justified only if the sample size is large. The heteroskedasticty-robust $t$ statistics are justified only if the sample size is small.