12. Which excerpt from Excerpt from Tinker et al. v. Des Moines Independent Community School District et al. provides textual evidence that the students knew in advance that their activities were not officially approved by the school district? A. The group determined to publicize their objections to the hostilities in Vietnam and their support for a truce by wearing black armbands during the holiday season and by fasting on December 16 and New Year's EvePetitioners and their parents had previously engaged in similar activities , and they decided to participate in the program . B. On December 14, 1965 , they met and adopted a policy that any student wearing an armband to gchool would be asked to remove it , and if he refused he would be suspended until he returned without the armband . were aware of the regulation that the school authonties adopted . December 16, Mary Beth and Christopher wore black armbands to their schools . John Tinker wore his armband thenext dayThey were all sent home and suspended from school until they would come back without their armbands ... D. Any variation from the majority's opinion may inspire fear . Any word spoken , in class , in the lunchroom , or on the campus , that deviates from the views of another person may start an argument or cause a disturbance . HELP ME PLSSS