According to the Cognitive Developmental Theory of Gender, How Do

According to the cognitive developmental theory of gender, how do preschool children decide who is male and who is female?

A) Preschoolers focus on people's names.
B) Preschoolers use their gender schemas of what is gender appropriate and inappropriate.
C) Preschoolers rely on physical features, such as dress and hairstyle.
D) Preschoolers rely on what others say.