The Spatial Ability Tested in the Rod-And-Frame Task and Piaget's

The spatial ability tested in the rod-and-frame task and Piaget's water level test

A) shows no gender differences.
B) shows small gender differences during childhood and larger ones during adulthood, with boys and men having the advantage.
C) shows large gender differences during both childhood and adulthood, with boys and men having the advantage.
D) shows small differences during both childhood and adulthood, with girls and women having the advantage.