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 Variable N Mean StDev SE Mean 99.0% CI AGEWED 26650 21.440 4.683 0.029 (21.366, 21.514) Click the icon to view the table of critical t-values. . . . . . (a) Use the summary to determine the point estimate of the population mean and margin of error for the confidence interval. x= 21.440 (Type an integer or a decimal. Do not round.) E= 0.074 (Type an integer or a decimal. Do not round.) (b) Interpret the confidence interval. Select the correct choice below and fill in the answer box(es) within your choice. A. One can be 99% confident that the mean age of people when first married is between 21.366 and 21.514 years. (Type integers or decimals. Do not round.) O B. There is a 99% probability that the mean age of people when first married is between and years. (Type integers or decimals. Do not round.) O C. One can be 99% confident that the mean age of people when first married is years. (Type an integer or a decimal. Do not round.) O D. There is a 99% probability that the mean age of people when first married is years. (Type an integer or a decimal. Do not round.)(c) Verify the results by computing a 99% confidence interval with the information provided. Begin with the lower bound. 4.683 (Type the terms of your expression in the same order as they appear in the original expression. Round to three decimal places as needed.)\f