The police suspected that Yancey, a 16-year-old high school student, had committed a series of burglaries. Two officers went to Yancey's high school and asked the principal to call Yancey out of class and to search his backpack. While the officers waited, the principal took Yancey into the hall where she asked to look in his backpack. When Yancey refused, the principal grabbed it from him, injuring Yancey's shoulder in the process. In the backpack, she found jewelry that she turned over to the officers. The officers believed that the jewelry had been taken in one of the burglaries. They arrested Yancey, took him to the station, and gave him Miranda warnings. Yancey asked to see a lawyer. The police called Yancey's parents to the station. When Yancey's parents arrived, the police asked them to speak with Yancey. They put them in a room and secretly recorded their conversation with a concealed electronic device. Yancey broke down and confessed to his parents that he had committed the burglaries. Yancey was charged with the burglaries. Yancey moves to suppress the use of the jewelry. The court should 
deny the motion on the ground that the search was incident to a lawful arrest. deny the motion on the ground that school searches are reasonable if conducted by school personnel on school grounds on the basis of reasonable suspicion. grant the motion on the ground that the (C) grant the motion on the ground that the search was conducted with excessive force. grant the motion on the ground that the search was conducted without probable cause or a warrant.