Research by Alexander and Hines Found That When Male and Female

Research by Alexander and Hines found that when male and female monkeys were given children's toys to play with,

A) males used the toys as weapons and the females "mothered" the toys.
B) monkey testosterone levels increased when they played with a "boy" toy and decreased when they played with a "girl" toy.
C) the monkeys ignored the toys.
D) the monkeys used the toys to imitate objects in their own environment such as leaves and branches.
E) the monkeys showed similar sex-specific toy preferences to that of boys and girls.