Differences Have Been Observed Between Males and Females in Their

Multiple Choice

Differences have been observed between males and females in their performance on spatial tasks.Which statement does NOT explain such these observations

A)  There are disparities in the everyday activities of males and females which may lead to the advantage seen by males in their performance on spatial tasks. 
B)  Males and females differ in genetic makeup. 
C)  Males and females are given and encouraged to play different types of toys. 
D)  Males are smarter than females.