Which of the Following Statements Is True

Multiple Choice

Which of the following statements is true?

A) OLS estimates in censored regression models are consistent estimators of the population coefficients.
B) In a truncated regression model, the samples are not included randomly from an underlying population but are based on a given rule.
C) In a censored regression model, units in the sample are taken from a particular subset of the population.
D) Maximum likelihood estimators are consistent in truncated regression models even if there is nonnormality or heteroskedasticity in the error terms.