Which of the Following Is a Difference Between a Mean

Which of the following is a difference between a mean and a median?

A) A mean divides the data half above it and half below it; a median does not.
B) A median is not affected by outliers; a mean is affected by outliers.
C) A mean is an observation that occurs most frequently; a median is the average of all observations.
D) A median is not meaningful for ratio data; a mean is meaningful to ratio data.