Which Behavior Is a Sign That Wanda Has Developed a Theory

Which behavior is a sign that Wanda has developed a theory of mind?

A) Rather than assuming her uncle automatically knows, Wanda tells him where she and her mother bought her new shoes.
B) Wanda tells her uncle what she thinks of her new shoes
C) Wanda shows her uncle her beautiful new shoes.
D) Wanda tells her uncle how much her mother paid for her new shoes.