Why Are Convenience Samples Commonly Used in Marketing Research

Why are convenience samples commonly used in marketing research?

A) Sample size needed is easier to calculate for a convenience sample.
B) Not all research is done with the objective of generalizing to a universe.
C) Convenience samples are easier to understand than random samples.
D) People prefer to participate in a convenience sample.
E) Everyone has a better chance of being surveyed in a convenience sample.