Which of the Following Is TRUE

Which of the following is TRUE?

A) Since secondary data will rarely provide a complete answer to a research question, it is always a good idea to collect at least some primary data.
B) Attitudes and opinions held by consumers are more often used to delineate market segments than are demographic or socioeconomic characteristics.
C) A rather attractive feature of demographic and socioeconomic data is that all of the common variables of interest to researchers are easily verifiable as to their accuracy.
D) Personality is a good predictor of consumption behavior.
E) They are all false.