Why Would a Marketing Researcher Use a Survey Rather Than

Why would a marketing researcher use a survey rather than some other tool to gather research data?

A) It is easy to construct questionnaires.
B) It is typically a fast way to gather information.
C) It is generally a less expensive way to gather information than searching through secondary data.
D) It is a good way to gather information firsthand.
E) All of the above describe advantages gained from the use of a survey.