A study asked respondents, "If ever married, how old were you when you first married?" The results are summarized in the technology excerpt that follows. Complete parts (a) through (d) below....

just the last multiple choice question, thank you!

Extracted text: A study asked respondents, "If ever married, how old were you when you first married?" The results are summarized in the technology excerpt that follows. Complete parts (a) through (d) below. One-Sample T: AGEWED Mean StDev SE Mean Variable 95.0% CI AGEWED 26790 23.070 4.991 0.030 (23.010, 23.130) Click the icon to view the table of critical t-values. 4.991 23.070 1.96 • = 23.010 26790 (Round to three decimal places as needed.) Next find the upper bound. 4.991 23.070 + 1.96 • = 23.130 26790 (Round to three decimal places as needed.) (d) Why is the margin of error for this confidence interval so small? O A. The mean is very small. O B. The standard deviation is very large. O C. The standard deviation is very small. O D. The sample size used is very large.