What experience makes Wind-Wolf want to stop attending the school?

A.The teacher made fun of Wind-Wolf when he answered that there were 13 months in a year.
B.The teacher made fun of Wind-Wolf's name and refused to call him by that name.
C.A classmate's mother would not let Wind-Wolf play at her house because he was an American Indian.
D.Wind-Wolf was forced to cut his long hair because all students are required to wear their hair short.