Which of the Following Statements Is Not True

Which of the following statements is not true?

A) While surveys are inexpensive and simple to administer, mailed questionnaires have low response rates.
B) Secondary data are often longitudinal, which allows an examination of trend data.
C) Experiments can be replicated but are rarely representative of a population.
D) Content analysis is expensive, but very useful for historical data.
E) Evaluation research is most useful for real-life applications.