Which of the Following Is True Regarding the Size of the Sample

Which of the following is true regarding the size of the sample?

A) You should strive to have a sample that is at least 50 percent of the size of the population.
B) There is no such thing as having a sample that is too large.
C) Sample size is more important than the sample plan.
D) Only samples with large sample sizes may be considered representative samples.
E) A sample size that is too large wastes research dollars; the sample size should be just large enough to give the researcher accurate results without wasting money.