Let there be no overlap between the box and whisker plots for three drug treatments where each drug was administered to 35 individuals. The box plots for this data:

A

represent sign for the null hypothesis of ANOVA

B

can be very deceptive. You should not be looking at box plots in this setting.

C

provide no sign for, or against, the null hypothesis of ANOVA

D

represent sign against the null hypothesis of ANOVA