What Was the Primary Problem with the Original Arapaho Public

What was the primary problem with the original Arapaho public school language instruction program?​

A) ​Students were not able to gain linguistic fluency from the classroom.
B) ​Arapaho elders did not support language training in school.
C) ​There were various native languages being taught in school and no focus.
D) ​Not all students attending the school were true Arapaho.