A 5-year-old girl talks to herself while trying to fold a T-shirt. Which of the following statements is correct in the context of the behaviour displayed by the girl?

• A. Jean Piaget would explain this as social interaction, while Lev Vygotsky would explain this as an exploration.
• B. Jean Piaget and Lev Vygotsky would explain this as the child's attempt to imitate her mother.
• C. Jean Piaget and Lev Vygotsky would explain this as egocentric nature of the child's thoughts.
• D. Jean Piaget would explain this as egocentric speech, while Lev Vygotsky would explain this as the child's attempt to regulate her actions through private speech.