In the Context of the Types of Regression Analysis, Identify

In the context of the types of regression analysis, identify a true statement about simple regression analysis.

A) It is used when there is a well-developed theory or model suggesting a certain causal sequence of variables.
B) Sampling and measurement error tend to make unstable correlations among variables in this regression.
C) The order in which variables are entered is based on a statistical decision.
D) Each predictor variable is assessed as if it had been entered after each of the other predictors had been entered.