Which of the Following Is NOT an Example of Primary

Multiple Choice

Which of the following is NOT an example of primary data collection?

A) Telephone survey of manufacturers.
B) Computerized literature search of Google.com to learn about the U.S.trade deficit.
C) Asking restaurant patrons to complete a survey after their meal and dropping it in the suggestion box before exiting.
D) Observation of oil patches in drive ways of homes to determine the socioeconomic status of the neighborhood.
E) An academic experiment using graduate students in a retailing course as subjects to determine how different retailers measure customer satisfaction.