In Stratified Sampling,we Should Always Ensure That the Sample Drawn

Multiple Choice

In stratified sampling,we should always ensure that the sample drawn for each stratum is:

A) equal.
B) proportionate to the stratum's proportion of the total population.
C) of the appropriate size to ensure statistical efficiency.
D) proportionate to the stratum's proportion of the total census.
E) proportionate to the stratum's proportion of the total sample.