In Multiple Regression Analysis, Which of the Following Is a Clue

Multiple Choice

In multiple regression analysis, which of the following is a clue that multicollinearity is present?

A) The value ofis large, indicting a good fit, but the individual t - tests are nonsignificant.
B) The signs of the regression coefficients are contrary to what we would intuitively expect the contributions of those variables would be.
C) A matrix of correlations, generated by computer, shows which predictor variables are highly correlated with each other and with the response variable y.
D) All of these.
E) None of these.