Question: Can you explain to me how this is the answer, please and thank you! (6) Compare the margin of error of a 99% confidence interval

Can you explain to me how this is the answer, please and thank you!

(6) Compare the margin of error of a 99% confidence interval with the margin of error of a 80% confidence interval (both constructed using the same data). Which statement(s) is correct? (A) The 80% confidence interval is wider than the 99% confidence interval. (B) The 80% confidence interval is about half the length of a 99% confidence interval. (C) The 80% confidence interval is about 80% the length of the 99% confidence interval. (D) The 80% confidence interval is about two thirds the length of the 99% confidence interval. (E) (A) and (C)

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