Simultaneous causality biasA) results in biased estimators if there is heteroskedasticity in the error term.B) happens in complicated systems of...

Simultaneous causality biasA) results in biased estimators if there is heteroskedasticity in the error term.B) happens in complicated systems of equations called block recursive systems.C) is also called sample selection bias.D) arises in a regression of Y on X when, in addition to the causal link of interest from X to Y, there is acausal link from Y to X.