Which of the Following Statements About Inquiry Tests Is Most

Which of the following statements about inquiry tests is most accurate?

A) With inquiry tests, a question such as, "What ads do you remember seeing yesterday?" is asked of respondents without any other prompting.
B) With inquiry tests, product information, product samples, or premiums are offered to an ad's readers or viewers, and ads generating the most inquiries are considered most effective.
C) Inquiry tests involve studies such as controlled experiments and consumer purchase tests.
D) In an inquiry test, respondents are asked questions to measure changes in their attitudes after an advertising campaign.
E) In an inquiry test, respondents are first shown an ad and then asked whether their previous exposure to it was through reading, viewing, or listening.