Consider a random variable Y. What is the difference between the sample average Y and the population mean?(A) Both the population mean and the sample average Y are estimators of the central tendency of the distribution of Y.(B) The population mean is a true measure of the central tendency of the distribution of Y whereas the sample average Y an estimator of the population mean.(C) Both the population mean and the sample average Y true measures of the central tendency of the distribution of Y.(D) The sample average Y is a true measure of the central tendency of the distribution of Y whereas the population mean is an estimator of the sample average.