Which of the Following Statements About R² and R_adj² Is

Which of the following statements about R² and R_adj² is correct?

A) R² is always larger than R_adj².
B) R² will always increase as more predictors are added to the model.
C) R_adj² adjusts for the number of independent variables and sample size.
D) If an additional independent variable were entered in the model, an increase in R² indicates the new variable is adding value to the model.
E) R² and R_adj² will never be negative.