Which statement from the dissenting opinion of Tinker v. Des Moines court decision best supports the reasoning that the conduct of the student protesters was not within the protection of the free speech clause of the First Amendment?

A. This case, therefore, wholly without constitutional reasons, in my judgment, subjects all the public schools in the country to the whims and caprices of their loudest-mouthed, but maybe not their brightest, students.
B. Even a casual reading of the record shows that this armband did divert students' minds from their regular lessons, and that talk, comments, etc., made John Tinker "self-conscious" in attending school with his armband.
C. There is also evidence that a teacher of mathematics had his lesson period practically "wrecked," chiefly by disputes with Mary Beth Tinker, who wore her armband for her "demonstration."
D. In Cox v. Louisiana, the Court clearly stated that the rights of free speech and assembly "do not mean that everyone with opinions or beliefs to express may address a group at any public place and at any time."