The average body fat percentage in a large population of male high school athletes is 15%, with a standard deviation of 6%. If the mean is estimated repeatedly from different samples of size 100, which of the following statements is NOT true about the sample means:

A. The standard deviation of the distribution of sample means is 6%

B. If a 95% confidence interval is estimated for each sample mean, 95% of the confidence intervals will include the value 15%

D. The distribution of the sample means is approximately Normal

D. The mean of the distribution of sample means is 15%.