Which of the Following Statements Provides the Best Guidance for Model

Multiple Choice

Which of the following statements provides the best guidance for model building?

A) If the value of r² increases as more variables are added to the model,the variables should remain in the model,regardless of the magnitude of increase.
B) If the value of the adjusted r² increases as more variables are added to the model,the variables should remain in the model.
C) If the value of r² increases as more variables are added to the model,the variables should not remain in the model,regardless of the magnitude of the increase.
D) If the value of the adjusted r² increases as more variables are added to the model,the variables should not remain in the model.
E) None of the statements provide accurate guidance.