Which Observation Weakens the Evolutionary Explanation of Gender Differences in Spatial

Which observation weakens the evolutionary explanation of gender differences in spatial abilities

A)  There frequently was a sex-based division of labour in ancient hunting and gathering societies. 
B)  Males are encouraged to engage in activities that provide more practice with spatial tasks. 
C)  Males frequently perform slightly better than females on tasks involving mental rotation of images and navigation in space. 
D)  Females perform slightly better than males on tasks involving memory for locations.