We Are Studying Potential Test Bias Using Differential Prediction

Multiple Choice

We are studying potential test bias using differential prediction. We find that the correlation between a test and the criterion we are trying to predict is exactly the same (say, r = .45) in groups A and B. Based on just that information, what can we conclude about slope bias and intercept bias?

A) There is no slope or intercept bias.
B) There is both slope and intercept bias.
C) There is no intercept bias but there may be slope bias.
D) There is no slope bias but there may be intercept bias.