If You Construct a 95% Confidence Interval Around a Sample

Multiple Choice

If you construct a 95% confidence interval around a sample mean and the 95% CI does not include the population mean, what would this suggest?

A) the observed mean is significant larger than the population mean
B) the observed mean is significantly smaller than the population mean
C) the observed mean is significantly different from the population mean
D) the observed mean is not significantly different from the population mean.