Which of the Following Is True About Correlational Designs

Multiple Choice

Which of the following is true about correlational designs?

A) Finding a relationship between two variables does not mean that one causes the other but could give clues to set up experiments where causality may be determined.
B) Finding a relationship between two variables NEVER means that one causes the other.
C) Correlational designs are not very common.
D) Correlational designs are more powerful than a controlled experiment.