A random sample of 20 recent weddings in a country yielded a mean wedding cost of $26,364.94. Assume that recent wedding costs in this country are normally distributed with a standard deviation of $7900. Complete parts (a) through (c) below. a. Determine a 95% confidence interval for the mean cost, u, of all recent weddings in this country. The 95% confidence interval is from $ 22903 to $ 29827 . Round to the nearest cent as needed.) b. Interpret your result in part (a). Choose the correct answer below. O A. We can be 95% confident that the mean cost, u, of all recent weddings in this country is somewhere within the confidence interval. O B. We can be 95% confident that the sample cost of recent weddings in this country is somewhere within the confidence interval. O C. We can be 95% confident that any randomly selected recent wedding cost in this country is somewhere within the confidence interval. O D. The mean cost, u, of all recent weddings in this country is somewhere within the confidence interval