Read the following context and choose the best option to answer the question.
Context: The students ended up fighting back and trying to sue the company for copyright infringements upon their own works . Their argument was that the company is profiting by copying students papers onto their servers because they are granted permission . The only reason students give permission is because the schools force them to sign a waiver that allows tunitin.com to do this .
Question: Why might the schools use the services of turnitin.com ?
Options: 
- The schools use the service because their students are cheaters .
 - The schools use the service because they trust their students .
 - None of the above choices .
 - The schools use the service to prevent commercializing .


None of the above choices .