Which of the Following Statements Best Describes Secondary Data

Which of the following statements best describes secondary data?

A) Secondary data are pieces of information that have been collected prior to the start of the focal research project.
B) Secondary data are those data collected to address specific research needs.
C) Secondary data collection is always extremely time-consuming and expensive.
D) Secondary data will always meet the researchers' needs.
E) Secondary data include only qualitative research.