You Have Collected Data About the Post Void Residuals (PVR)

You have collected data about the post void residuals (PVR) of participants in your study. The mean PVR is 120 mls. Because you have some outliers noted in your study you also report a median PVR which is 138 mls. Based on this data you know:

A) The outliers lie in equal amounts on both sides of the distribution
B) The variable is not normally distributed
C) There is a bimodal distribution
D) The researcher is biased