Which of the following is true of experimental designs and conclusions of research?
A. Researchers can only claim that the IV causes the results in the DV when alternative explanations and confounds have been eliminated through research design or statistical techniques.
B. The experimental design is one of several designs, such as survey design, that allows researchers to infer and conclude that an IV is causally related to a DV.
C. The experimental design should not be used to draw cause-effect conclusions because the manipulation of the IV in this design makes it impossible to know if it is related to the DV.
D. The experimental design is sufficient to allow a researcher to infer cause-effect, regardless of the details of the study procedures.