According to Kohlberg, Which Child's Behaviour on a Piagetian Conservation

According to Kohlberg, which child's behaviour on a Piagetian conservation task indicates that she has likely achieved gender constancy?

A) Melinda, who believes that a row of pennies that has been spread out has more pennies than it originally did
B) Alicia, who intently watches the liquid being poured from one container to another to understand where the extra liquid is going
C) Jasmine, who states that a ball of clay that has been rolled out into a hot dog shape has more clay after the change
D) Stephanie, who understands that she is a girl and that nothing will change that