During Recess, Four-Year-Old Bethany Is Playing with Some Dolls

During recess, four-year-old Bethany is playing with some dolls. When her classmate, Clarissa, comes up and puts one of the dolls in a carriage, Bethany screams, "Stop that. I'm playing with her." Of the following teacher responses, which one is most likely to encourage Bethany to solve this problem?

A) "Bethany, be nice. Why do you always yell about every little thing?"
B) "You don't want Clarissa touching the dolls?"
C) "Stop that yelling. Don't fuss."
D) "Come on, Bethany, Clarissa is just playing with the dolls. It's no big deal."