Which of the Following Statements Is Correct When Estimating the Difference

Multiple Choice

Which of the following statements is correct when estimating the difference between two population proportions p₁ − p₂?

A) We must take two independent samples.
B) We count the number of successes in each sample.
C) The sampling distribution of the difference of sample proportions is approximately normally distributed for large sample sizes.
D) All of these choices are correct.