Which of the Following Statements Is True

Which of the following statements is true?

A) A sampling distribution is the probability distribution of elements from a particular sample.
B) The standard error of the mean is the standard deviation of the sampling distribution of sample means.
C) The sampling distribution of the mean is another name for the frequency distribution that results from a single sample.
D) The sampling distribution of the mean is another name for the distribution of means corresponding to the samples that could be drawn under the specified sampling plan.
E) Both b and d are true.