Which of the Following Is FALSE

Which of the following is FALSE?

A) Data based on longitudinal analysis (employing consumer panels) permit the researcher to observe aggregate differences but not individual changes.
B) The most important single advantage of the panel design is analytical.
C) Panels typically allow the collection of more classification information than cross-sectional studies.
D) A panel is a permanent or fixed sample of members from whom information is obtained continuously or at intervals over a period of time.
E) All of the above are true.