Which of the following sentences best summarizes this short story?

I’m between A and B but I don’t know

A. An encounter with an unkind teacher makes one schoolgirl realize she does not like red sweaters.
B. A classroom of students refuse to listen to their teacher's request to identify the owner of a certain sweater.
C. An experience at school causes a girl to feel unsure of herself, leading her to consider what it means to be one year older.
D. A teacher embarrasses a student on her birthday in front of other students, which causes three of the girls to argue.