What Is the Importance of the U

What is the importance of the U.S. Supreme Court's holding in the Board of Education of Independent School District No. 92 of Pottawatomie County, et al v. Earls et al., the U.S.?

A) random drug tests of students is always an invasion of privacy requiring a search warrant
B) that the constitutionality of zero-tolerance policies for weapon and drug violations should be upheld
C) that random drug tests for all middle and high school students participating in extracurricular activities is not a constitutional violation
D) that random searches of lockers for drugs and weapons is unconstitutional