A university surveyed recent graduates of the English department about their starting salaries. Four hundred graduates returned the survey. The average salary was $25,000. Assume for purposes of this problem that the population standard deviation is known, and it is $2,500. A 95% confidence interval is constructed. What does the confidence interval mean?A) There is a 95% probability that the population parameter will not lie within the interval constructed using the sample's data. B) The population mean is not in the interval. C) There is a 95% probability that the population parameter will lie within the interval constructed using the sample's data. D) The population mean is in the interval.