Which of the Following Statements Is True

Which of the following statements is true?

A) The one-group pretest-posttest design is an example of a true experimental design.
B) In an experiment with a large sample, it is safe to assume that the people who did not respond were equal to the people who did.
C) History primarily jeopardizes the internal validity of marketing experiments.
D) The use of randomization to eliminate selection bias in experimental designs works best when the groups being compared are small.
E) None of the above is true.