The Feature That Distinguishes Stratified Sampling from Other Forms of Probability

The feature that distinguishes stratified sampling from other forms of probability sampling is that only stratified samples

A) involve partitioning the parent population into mutually exclusive and exhaustive subsets.
B) allow the a priori determination of the probability that any population element will be included in the sample.
C) make the probability of selection of any population element equal.
D) involve partitioning the parent population into mutually exclusive and exhaustive subsets and selecting a simple random sample from each subset.
E) None of the above.