Which of the Following Is an Appropriate Interpretation for These

Which of the following is an appropriate interpretation for these graphs?
Maternal care (as measured by minutes crouching over offspring and proportion of pups retrieved) in female mice that have the fosB allele is

A) less than the maternal care given by female mice without the fosB allele.
B) greater than the maternal care given by female mice without the fosB allele.
C) the same as the maternal care given by female mice without the fosB allele.
D) less than the maternal care given by female mice without the fosB allele; however, the graphs depict only minor differences, which are most likely not significant.
E) not possible to determine from the data.